diff --git a/Cargo.lock b/Cargo.lock
index ce66c8e..b3decef 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,9 +2,9 @@
 # It is not intended for manual editing.
 [[package]]
 name = "addr2line"
-version = "0.13.0"
+version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b6a2d3371669ab3ca9797670853d61402b03d0b4b9ebf33d677dfa720203072"
+checksum = "7c0929d69e78dd9bf5408269919fcbcaeb2e35e5d43e5815517cdc6a8e11a423"
 dependencies = [
  "gimli",
 ]
@@ -71,18 +71,18 @@ dependencies = [
 
 [[package]]
 name = "ahash"
-version = "0.4.5"
+version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0adac150c2dd5a9c864d054e07bda5e6bc010cd10036ea5f17e82a2f5867f735"
+checksum = "f6789e291be47ace86a60303502173d84af8327e3627ecf334356ee0f87a164c"
 dependencies = [
  "const-random",
 ]
 
 [[package]]
 name = "aho-corasick"
-version = "0.7.13"
+version = "0.7.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "043164d8ba5c4c3035fec9bbee8647c0261d788f3474306f93bb65901cae0e86"
+checksum = "7404febffaa47dac81aa44dba71523c9d069b1bdc50a77db41195149e17f68e5"
 dependencies = [
  "memchr",
 ]
@@ -138,12 +138,6 @@ dependencies = [
  "num-traits",
 ]
 
-[[package]]
-name = "arc-swap"
-version = "0.4.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4d25d88fd6b8041580a654f9d0c581a047baee2b3efee13275f2fc392fc75034"
-
 [[package]]
 name = "array-macro"
 version = "1.0.5"
@@ -158,9 +152,9 @@ checksum = "a4c527152e37cf757a3f78aae5a06fbeefdb07ccc535c980a3208ee3060dd544"
 
 [[package]]
 name = "arrayvec"
-version = "0.5.1"
+version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cff77d8686867eceff3105329d4698d96c2391c176d5d03adc90c7389162b5b8"
+checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b"
 
 [[package]]
 name = "atty"
@@ -187,12 +181,12 @@ checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
 
 [[package]]
 name = "backtrace"
-version = "0.3.52"
+version = "0.3.55"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f813291114c186a042350e787af10c26534601062603d888be110f59f85ef8fa"
+checksum = "ef5140344c85b01f9bbb4d4b7288a8aa4b3287ccef913a14bcc78a1063623598"
 dependencies = [
  "addr2line",
- "cfg-if 0.1.10",
+ "cfg-if 1.0.0",
  "libc",
  "miniz_oxide",
  "object",
@@ -224,6 +218,12 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3441f0f7b02788e948e47f457ca01f1d7e6d92c693bc132c22b087d3141c03ff"
 
+[[package]]
+name = "base64"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
+
 [[package]]
 name = "bindgen"
 version = "0.53.3"
@@ -273,9 +273,9 @@ checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
 
 [[package]]
 name = "blake2b_simd"
-version = "0.5.10"
+version = "0.5.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d8fb2d74254a3a0b5cac33ac9f8ed0e44aa50378d9dbb2e5d83bd21ed1dc2c8a"
+checksum = "afa748e348ad3be8263be728124b24a24f268266f6f5d58af9d75f6a40b5c587"
 dependencies = [
  "arrayref",
  "arrayvec",
@@ -355,9 +355,9 @@ checksum = "0e4cec68f03f32e44924783795810fa50a7035d8c8ebe78580ad7e6c703fba38"
 
 [[package]]
 name = "cc"
-version = "1.0.61"
+version = "1.0.65"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed67cbde08356238e75fc4656be4749481eeffb09e19f320a25237d5221c985d"
+checksum = "95752358c8f7552394baf48cd82695b345628ad3f170d607de3ca03b8dacca15"
 
 [[package]]
 name = "cexpr"
@@ -453,10 +453,20 @@ dependencies = [
 ]
 
 [[package]]
-name = "const-random"
-version = "0.1.11"
+name = "console_error_panic_hook"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02dc82c12dc2ee6e1ded861cf7d582b46f66f796d1b6c93fa28b911ead95da02"
+checksum = "b8d976903543e0c48546a91908f21588a680a8c8f984df9a5d69feccb2b2a211"
+dependencies = [
+ "cfg-if 0.1.10",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "const-random"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "486d435a7351580347279f374cb8a3c16937485441db80181357b7c4d70f17ed"
 dependencies = [
  "const-random-macro",
  "proc-macro-hack",
@@ -464,19 +474,21 @@ dependencies = [
 
 [[package]]
 name = "const-random-macro"
-version = "0.1.11"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc757bbb9544aa296c2ae00c679e81f886b37e28e59097defe0cf524306f6685"
+checksum = "49a84d8ff70e3ec52311109b019c27672b4c1929e4cf7c18bcf0cd9fb5e230be"
 dependencies = [
  "getrandom 0.2.0",
+ "lazy_static",
  "proc-macro-hack",
+ "tiny-keccak",
 ]
 
 [[package]]
 name = "const_fn"
-version = "0.4.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce90df4c658c62f12d78f7508cf92f9173e5184a539c10bfe54a3107b3ffd0f2"
+checksum = "c478836e029dcef17fb47c89023448c64f781a046e0300e257ad8225ae59afab"
 
 [[package]]
 name = "constant_time_eq"
@@ -514,11 +526,11 @@ dependencies = [
 
 [[package]]
 name = "core-foundation"
-version = "0.7.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57d24c7a13c43e870e37c1556b74555437870a04514f7685f5b354e090567171"
+checksum = "0a89e2ae426ea83155dccf10c0fa6b1463ef6d5fcb44cee0b224a408fa640a62"
 dependencies = [
- "core-foundation-sys 0.7.0",
+ "core-foundation-sys 0.8.2",
  "libc",
 ]
 
@@ -533,9 +545,9 @@ dependencies = [
 
 [[package]]
 name = "core-foundation-sys"
-version = "0.7.0"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b3a71ab494c0b5b860bdc8407ae08978052417070c2ced38573a9157ad75b8ac"
+checksum = "ea221b5284a47e40033bf9b66f35f984ec0ea2931eb03505246cd27a963f981b"
 
 [[package]]
 name = "coreaudio-rs"
@@ -549,9 +561,9 @@ dependencies = [
 
 [[package]]
 name = "coreaudio-sys"
-version = "0.2.5"
+version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d6570ee6e089131e928d5ec9236db9e818aa3cf850f48b0eec6ef700571271d4"
+checksum = "17f73df0f29f4c3c374854f076c47dc018f19acaa63538880dba0937ad4fa8d7"
 dependencies = [
  "bindgen",
 ]
@@ -573,11 +585,11 @@ dependencies = [
 
 [[package]]
 name = "crc32fast"
-version = "1.2.0"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba125de2af0df55319f41944744ad91c71113bf74a4646efff39afe1f6842db1"
+checksum = "81156fece84ab6a9f2afdb109ce3ae577e42b1228441eded99bd77f627953b1a"
 dependencies = [
- "cfg-if 0.1.10",
+ "cfg-if 1.0.0",
 ]
 
 [[package]]
@@ -660,6 +672,12 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "crunchy"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a81dae078cea95a014a339291cec439d2f232ebe854a9d672b796c6afafa9b7"
+
 [[package]]
 name = "crypto-mac"
 version = "0.7.0"
@@ -709,7 +727,7 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "85fc5b6a8ba2f1bc743892068bde466438f78d6247197e2dc094bfd53fdea4b7"
 dependencies = [
- "ahash 0.4.5",
+ "ahash 0.4.6",
  "chrono",
  "crossbeam-channel 0.4.4",
  "enum-map",
@@ -871,19 +889,19 @@ dependencies = [
 
 [[package]]
 name = "dirs-next"
-version = "1.0.1"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1cbcf9241d9e8d106295bd496bbe2e9cffd5fa098f2a8c9e2bbcbf09773c11a8"
+checksum = "cf36e65a80337bea855cd4ef9b8401ffce06a7baedf2e85ec467b1ac3f6e82b6"
 dependencies = [
- "cfg-if 0.1.10",
+ "cfg-if 1.0.0",
  "dirs-sys-next",
 ]
 
 [[package]]
 name = "dirs-sys-next"
-version = "0.1.0"
+version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c60f7b8a8953926148223260454befb50c751d3c50e1c178c4fd1ace4083c9a"
+checksum = "99de365f605554ae33f115102a02057d4fc18b01f3284d6870be0938743cfe7d"
 dependencies = [
  "libc",
  "redox_users",
@@ -915,18 +933,18 @@ checksum = "e78d4f1cc4ae33bbfc157ed5d5a5ef3bc29227303d595861deb238fcec4e9457"
 
 [[package]]
 name = "encoding_rs"
-version = "0.8.24"
+version = "0.8.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a51b8cf747471cb9499b6d59e59b0444f4c90eba8968c4e44874e92b5b64ace2"
+checksum = "801bbab217d7f79c0062f4f7205b5d4427c6d1a7bd7aafdd1475f7c59d62b283"
 dependencies = [
- "cfg-if 0.1.10",
+ "cfg-if 1.0.0",
 ]
 
 [[package]]
 name = "enum-map"
-version = "0.6.3"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f81f09b9cb18af2ea1da2688a1d6b1762b4f938d7495bb034bce48d4c608043"
+checksum = "4187999839f4ae8be35cf185d1381aa8dc32d2f5951349cc37ae49ebc4781855"
 dependencies = [
  "array-macro",
  "enum-map-derive",
@@ -934,9 +952,9 @@ dependencies = [
 
 [[package]]
 name = "enum-map-derive"
-version = "0.4.3"
+version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e57001dfb2532f5a103ff869656887fae9a8defa7d236f3e39d2ee86ed629ad7"
+checksum = "e5c450cf304c9e18d45db562025a14fb1ca0f5c769b6f609309f81d4c31de455"
 dependencies = [
  "proc-macro2 1.0.24",
  "quote 1.0.7",
@@ -1026,11 +1044,11 @@ dependencies = [
 
 [[package]]
 name = "flate2"
-version = "1.0.18"
+version = "1.0.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da80be589a72651dcda34d8b35bcdc9b7254ad06325611074d9cc0fbb19f60ee"
+checksum = "7411863d55df97a419aa64cb4d2f167103ea9d767e2c54a1868b7ac3f6b47129"
 dependencies = [
- "cfg-if 0.1.10",
+ "cfg-if 1.0.0",
  "crc32fast",
  "libc",
  "miniz_oxide",
@@ -1057,6 +1075,16 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
 
+[[package]]
+name = "form_urlencoded"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ece68d15c92e84fa4f19d3780f1294e5ca82a78a6d515f1efaabcc144688be00"
+dependencies = [
+ "matches",
+ "percent-encoding 2.1.0",
+]
+
 [[package]]
 name = "fuchsia-cprng"
 version = "0.1.1"
@@ -1184,7 +1212,7 @@ dependencies = [
  "futures-sink",
  "futures-task",
  "memchr",
- "pin-project 1.0.1",
+ "pin-project 1.0.2",
  "pin-utils",
  "proc-macro-hack",
  "proc-macro-nested",
@@ -1224,9 +1252,9 @@ dependencies = [
 
 [[package]]
 name = "gimli"
-version = "0.22.0"
+version = "0.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aaf91faf136cb47367fa430cd46e37a788775e7fa104f8b4bcb3861dc389b724"
+checksum = "f6503fe142514ca4799d4c26297c4248239fe8838d827db6bd6065c6ed29a6ce"
 
 [[package]]
 name = "glob"
@@ -1254,9 +1282,9 @@ dependencies = [
 
 [[package]]
 name = "h2"
-version = "0.2.6"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "993f9e0baeed60001cf565546b0d3dbe6a6ad23f2bd31644a133c641eccf6d53"
+checksum = "5e4728fd124914ad25e99e3d15a9361a879f6620f63cb56bbb08f95abb97a535"
 dependencies = [
  "bytes 0.5.6",
  "fnv",
@@ -1266,9 +1294,10 @@ dependencies = [
  "http 0.2.1",
  "indexmap",
  "slab 0.4.2",
- "tokio 0.2.22",
+ "tokio 0.2.23",
  "tokio-util",
  "tracing",
+ "tracing-futures",
 ]
 
 [[package]]
@@ -1429,23 +1458,23 @@ dependencies = [
 
 [[package]]
 name = "hyper"
-version = "0.13.8"
+version = "0.13.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f3afcfae8af5ad0576a31e768415edb627824129e8e5a29b8bfccb2f234e835"
+checksum = "f6ad767baac13b44d4529fcf58ba2cd0995e36e7b435bc5b039de6f47e880dbf"
 dependencies = [
  "bytes 0.5.6",
  "futures-channel",
  "futures-core",
  "futures-util",
- "h2 0.2.6",
+ "h2 0.2.7",
  "http 0.2.1",
  "http-body 0.3.1",
  "httparse",
  "httpdate",
  "itoa",
- "pin-project 0.4.26",
+ "pin-project 1.0.2",
  "socket2",
- "tokio 0.2.22",
+ "tokio 0.2.23",
  "tower-service",
  "tracing",
  "want 0.3.0",
@@ -1484,9 +1513,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d979acc56dcb5b8dddba3917601745e877576475aa046df3226eabdecef78eed"
 dependencies = [
  "bytes 0.5.6",
- "hyper 0.13.8",
+ "hyper 0.13.9",
  "native-tls",
- "tokio 0.2.22",
+ "tokio 0.2.23",
  "tokio-tls",
 ]
 
@@ -1834,9 +1863,9 @@ checksum = "60302e4db3a61da70c0cb7991976248362f30319e88850c487b9b95bbf059e00"
 
 [[package]]
 name = "memchr"
-version = "2.3.3"
+version = "2.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
+checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
 
 [[package]]
 name = "memoffset"
@@ -1934,9 +1963,9 @@ dependencies = [
 
 [[package]]
 name = "native-tls"
-version = "0.2.4"
+version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b0d88c06fe90d5ee94048ba40409ef1d9315d86f6f38c2efdaad4fb50c58b2d"
+checksum = "6fcc7939b5edc4e4f86b1b4a04bb1498afaaf871b1a6691838ed06fcb48d3a3f"
 dependencies = [
  "lazy_static",
  "libc",
@@ -2046,14 +2075,14 @@ dependencies = [
 
 [[package]]
 name = "num"
-version = "0.3.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab3e176191bc4faad357e3122c4747aa098ac880e88b168f106386128736cf4a"
+checksum = "8b7a8e9be5e039e2ff869df49155f1c06bd01ade2117ec783e56ab0932b67a8f"
 dependencies = [
- "num-complex 0.3.0",
+ "num-complex 0.3.1",
  "num-integer",
  "num-iter",
- "num-rational 0.3.0",
+ "num-rational 0.3.2",
  "num-traits",
 ]
 
@@ -2080,18 +2109,18 @@ dependencies = [
 
 [[package]]
 name = "num-complex"
-version = "0.3.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b05ad05bd8977050b171b3f6b48175fea6e0565b7981059b486075e1026a9fb5"
+checksum = "747d632c0c558b87dbabbe6a82f3b4ae03720d0646ac5b7b4dae89394be5f2c5"
 dependencies = [
  "num-traits",
 ]
 
 [[package]]
 name = "num-integer"
-version = "0.1.43"
+version = "0.1.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d59457e662d541ba17869cf51cf177c0b5f0cbf476c66bdc90bf1edac4f875b"
+checksum = "d2cc698a63b549a70bc047073d2949cce27cd1c7b0a4a862d08a8031bc2801db"
 dependencies = [
  "autocfg 1.0.1",
  "num-traits",
@@ -2099,9 +2128,9 @@ dependencies = [
 
 [[package]]
 name = "num-iter"
-version = "0.1.41"
+version = "0.1.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a6e6b7c748f995c4c29c5f5ae0248536e04a5739927c74ec0fa564805094b9f"
+checksum = "b2021c8337a54d21aca0d59a92577a029af9431cb59b909b03252b9c164fad59"
 dependencies = [
  "autocfg 1.0.1",
  "num-integer",
@@ -2121,9 +2150,9 @@ dependencies = [
 
 [[package]]
 name = "num-rational"
-version = "0.3.0"
+version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a5b4d7360f362cfb50dde8143501e6940b22f644be75a4cc90b2d81968908138"
+checksum = "12ac428b1cb17fce6f731001d307d351ec70a6d202fc2e60f7d4c5e42d8f4f07"
 dependencies = [
  "autocfg 1.0.1",
  "num-integer",
@@ -2132,9 +2161,9 @@ dependencies = [
 
 [[package]]
 name = "num-traits"
-version = "0.2.12"
+version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac267bcc07f48ee5f8935ab0d24f316fb722d7a1292e2913f0cc196b29ffd611"
+checksum = "9a64b1ec5cda2586e284722486d802acf1f7dbdc623e2bfc57e65ca1cd099290"
 dependencies = [
  "autocfg 1.0.1",
  "libm",
@@ -2187,9 +2216,9 @@ dependencies = [
 
 [[package]]
 name = "object"
-version = "0.20.0"
+version = "0.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ab52be62400ca80aa00285d25253d7f7c437b7375c4de678f5405d3afe82ca5"
+checksum = "8d3b63360ec3cb337817c2dbd47ab4a0f170d285d8e5a2064600f3def1402397"
 
 [[package]]
 name = "ogg"
@@ -2202,9 +2231,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.4.1"
+version = "1.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "260e51e7efe62b592207e9e13a68e43692a7a279171d6ba57abd208bf23645ad"
+checksum = "13bd41f508810a131401606d54ac32a467c97172d74ba7662562ebba5ad07fa0"
 
 [[package]]
 name = "opaque-debug"
@@ -2338,27 +2367,27 @@ checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
 [[package]]
 name = "pin-project"
-version = "0.4.26"
+version = "0.4.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13fbdfd6bdee3dc9be46452f86af4a4072975899cf8592466668620bebfbcc17"
+checksum = "2ffbc8e94b38ea3d2d8ba92aea2983b503cd75d0888d75b86bb37970b5698e15"
 dependencies = [
- "pin-project-internal 0.4.26",
+ "pin-project-internal 0.4.27",
 ]
 
 [[package]]
 name = "pin-project"
-version = "1.0.1"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee41d838744f60d959d7074e3afb6b35c7456d0f61cad38a24e35e6553f73841"
+checksum = "9ccc2237c2c489783abd8c4c80e5450fc0e98644555b1364da68cc29aa151ca7"
 dependencies = [
- "pin-project-internal 1.0.1",
+ "pin-project-internal 1.0.2",
 ]
 
 [[package]]
 name = "pin-project-internal"
-version = "0.4.26"
+version = "0.4.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c82fb1329f632c3552cf352d14427d57a511b1cf41db93b3a7d77906a82dcc8e"
+checksum = "65ad2ae56b6abe3a1ee25f15ee605bacadb9a764edaba9c2bf4103800d4a1895"
 dependencies = [
  "proc-macro2 1.0.24",
  "quote 1.0.7",
@@ -2367,9 +2396,9 @@ dependencies = [
 
 [[package]]
 name = "pin-project-internal"
-version = "1.0.1"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81a4ffa594b66bff340084d4081df649a7dc049ac8d7fc458d8e628bfbbb2f86"
+checksum = "f8e8d2bf0b23038a4424865103a4df472855692821aab4e4f5c3312d461d9e5f"
 dependencies = [
  "proc-macro2 1.0.24",
  "quote 1.0.7",
@@ -2378,9 +2407,15 @@ dependencies = [
 
 [[package]]
 name = "pin-project-lite"
-version = "0.1.10"
+version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e555d9e657502182ac97b539fb3dae8b79cda19e3e4f8ffb5e8de4f18df93c95"
+checksum = "c917123afa01924fc84bb20c4c03f004d9c38e5127e3c039bbf7f4b9c76a2f6b"
+
+[[package]]
+name = "pin-project-lite"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6b063f57ec186e6140e2b8b6921e5f1bd89c7356dda5b33acc5401203ca6131c"
 
 [[package]]
 name = "pin-utils"
@@ -2390,9 +2425,9 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
 [[package]]
 name = "pkg-config"
-version = "0.3.18"
+version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d36492546b6af1463394d46f0c834346f31548646f6ba10849802c9c9a27ac33"
+checksum = "3831453b3449ceb48b6d9c7ad7c96d5ea673e9b470a1dc578c2ce6521230884c"
 
 [[package]]
 name = "platform-dirs"
@@ -2426,9 +2461,9 @@ dependencies = [
 
 [[package]]
 name = "ppv-lite86"
-version = "0.2.9"
+version = "0.2.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c36fa947111f5c62a733b652544dd0016a43ce89619538a8ef92724a6f501a20"
+checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
 
 [[package]]
 name = "proc-macro-hack"
@@ -2495,7 +2530,7 @@ dependencies = [
  "idna 0.2.0",
  "lazy_static",
  "regex",
- "url 2.1.1",
+ "url 2.2.0",
 ]
 
 [[package]]
@@ -2830,18 +2865,18 @@ dependencies = [
 
 [[package]]
 name = "reqwest"
-version = "0.10.8"
+version = "0.10.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e9eaa17ac5d7b838b7503d118fa16ad88f440498bf9ffe5424e621f93190d61e"
+checksum = "fb15d6255c792356a0f578d8a645c677904dc02e862bebe2ecc18e0c01b9a0ce"
 dependencies = [
- "base64 0.12.3",
+ "base64 0.13.0",
  "bytes 0.5.6",
  "encoding_rs",
  "futures-core",
  "futures-util",
  "http 0.2.1",
  "http-body 0.3.1",
- "hyper 0.13.8",
+ "hyper 0.13.9",
  "hyper-tls 0.4.3",
  "ipnet",
  "js-sys",
@@ -2851,16 +2886,17 @@ dependencies = [
  "mime_guess",
  "native-tls",
  "percent-encoding 2.1.0",
- "pin-project-lite",
+ "pin-project-lite 0.2.0",
  "serde",
  "serde_json",
- "serde_urlencoded 0.6.1",
- "tokio 0.2.22",
+ "serde_urlencoded 0.7.0",
+ "tokio 0.2.23",
  "tokio-socks",
  "tokio-tls",
- "url 2.1.1",
+ "url 2.2.0",
  "wasm-bindgen",
  "wasm-bindgen-futures",
+ "wasm-bindgen-test",
  "web-sys",
  "winreg 0.7.0",
 ]
@@ -2894,7 +2930,7 @@ dependencies = [
  "percent-encoding 1.0.1",
  "rand 0.6.5",
  "random",
- "reqwest 0.10.8",
+ "reqwest 0.10.9",
  "serde",
  "serde_derive",
  "serde_json",
@@ -2916,9 +2952,9 @@ dependencies = [
 
 [[package]]
 name = "rustc-demangle"
-version = "0.1.17"
+version = "0.1.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2610b7f643d18c87dff3b489950269617e6601a51f1f05aa5daefee36f64f0b"
+checksum = "6e3bad0ee36814ca07d7968269dd4b7ec89ec2da10c4bb613928d3077083c232"
 
 [[package]]
 name = "rustc-hash"
@@ -2969,6 +3005,12 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "332ffa32bf586782a3efaeb58f127980944bbc8c4d6913a86107ac2a5ab24b28"
 
+[[package]]
+name = "scoped-tls"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea6a9290e3c9cf0f18145ef7ffa62d68ee0bf5fcd651017e586dc7fd5da448c2"
+
 [[package]]
 name = "scopeguard"
 version = "1.1.0"
@@ -2977,24 +3019,24 @@ checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
 [[package]]
 name = "security-framework"
-version = "0.4.4"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "64808902d7d99f78eaddd2b4e2509713babc3dc3c85ad6f4c447680f3c01e535"
+checksum = "c1759c2e3c8580017a484a7ac56d3abc5a6c1feadf88db2f3633f12ae4268c69"
 dependencies = [
  "bitflags 1.2.1",
  "core-foundation",
- "core-foundation-sys 0.7.0",
+ "core-foundation-sys 0.8.2",
  "libc",
  "security-framework-sys",
 ]
 
 [[package]]
 name = "security-framework-sys"
-version = "0.4.3"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17bf11d99252f512695eb468de5516e5cf75455521e69dfe343f3b74e4748405"
+checksum = "f99b9d5e26d2a71633cc4f2ebae7cc9f874044e0c351a27e17892d76dce5678b"
 dependencies = [
- "core-foundation-sys 0.7.0",
+ "core-foundation-sys 0.8.2",
  "libc",
 ]
 
@@ -3058,14 +3100,14 @@ dependencies = [
 
 [[package]]
 name = "serde_urlencoded"
-version = "0.6.1"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ec5d77e2d4c73717816afac02670d5c4f534ea95ed430442cad02e7a6e32c97"
+checksum = "edfa57a7f8d9c1d260a549e7224100f6c43d43f9103e06dd8b4095a9b2b43ce9"
 dependencies = [
- "dtoa",
+ "form_urlencoded",
  "itoa",
+ "ryu",
  "serde",
- "url 2.1.1",
 ]
 
 [[package]]
@@ -3125,11 +3167,10 @@ dependencies = [
 
 [[package]]
 name = "signal-hook-registry"
-version = "1.2.1"
+version = "1.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a3e12110bc539e657a646068aaf5eb5b63af9d0c1f7b29c97113fad80e15f035"
+checksum = "ce32ea0c6c56d5eacaeb814fbed9960547021d3edd010ded1425f180536b20ab"
 dependencies = [
- "arc-swap",
  "libc",
 ]
 
@@ -3162,11 +3203,11 @@ dependencies = [
 
 [[package]]
 name = "socket2"
-version = "0.3.15"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1fa70dc5c8104ec096f4fe7ede7a221d35ae13dcd19ba1ad9a81d2cab9a1c44"
+checksum = "2c29947abdee2a218277abeca306f25789c938e500ea5a9d4b12a5a504466902"
 dependencies = [
- "cfg-if 0.1.10",
+ "cfg-if 1.0.0",
  "libc",
  "redox_syscall",
  "winapi 0.3.9",
@@ -3346,9 +3387,9 @@ dependencies = [
 
 [[package]]
 name = "termcolor"
-version = "1.1.0"
+version = "1.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb6bfa289a4d7c5766392812c0a1f4c1ba45afa1ad47803c11e1f407d846d75f"
+checksum = "2dfed899f0eb03f32ee8c6a0aabdb8a7949659e3466561fc0adf54e26d88c5f4"
 dependencies = [
  "winapi-util",
 ]
@@ -3376,18 +3417,18 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.21"
+version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "318234ffa22e0920fe9a40d7b8369b5f649d490980cf7aadcf1eb91594869b42"
+checksum = "0e9ae34b84616eedaaf1e9dd6026dbe00dcafa92aa0c8077cb69df1fcfe5e53e"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.21"
+version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cae2447b6282786c3493999f40a9be2a6ad20cb8bd268b0a0dbf5a065535c0ab"
+checksum = "9ba20f23e85b10754cd195504aebf6a27e2e6cbe28c17778a0c930724628dd56"
 dependencies = [
  "proc-macro2 1.0.24",
  "quote 1.0.7",
@@ -3415,10 +3456,28 @@ dependencies = [
 ]
 
 [[package]]
-name = "tinyvec"
-version = "0.3.4"
+name = "tiny-keccak"
+version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "238ce071d267c5710f9d31451efec16c5ee22de34df17cc05e56cbc92e967117"
+checksum = "2c9d3793400a45f954c52e73d068316d76b6f4e36977e3fcebb13a2721e80237"
+dependencies = [
+ "crunchy",
+]
+
+[[package]]
+name = "tinyvec"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccf8dbc19eb42fba10e8feaaec282fb50e2c14b2726d6301dbfeed0f73306a6f"
+dependencies = [
+ "tinyvec_macros",
+]
+
+[[package]]
+name = "tinyvec_macros"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
@@ -3446,9 +3505,9 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "0.2.22"
+version = "0.2.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d34ca54d84bf2b5b4d7d31e901a8464f7b60ac145a284fba25ceb801f2ddccd"
+checksum = "a6d7ad61edd59bfcc7e80dababf0f4aed2e6d5e0ba1659356ae889752dfc12ff"
 dependencies = [
  "bytes 0.5.6",
  "fnv",
@@ -3458,7 +3517,7 @@ dependencies = [
  "memchr",
  "mio",
  "num_cpus",
- "pin-project-lite",
+ "pin-project-lite 0.1.11",
  "slab 0.4.2",
 ]
 
@@ -3495,7 +3554,7 @@ dependencies = [
  "iovec",
  "log 0.4.11",
  "mio",
- "scoped-tls",
+ "scoped-tls 0.1.2",
  "tokio 0.1.22",
  "tokio-executor",
  "tokio-io",
@@ -3593,15 +3652,15 @@ dependencies = [
 
 [[package]]
 name = "tokio-socks"
-version = "0.2.2"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1997788a0e25e09300e44680ba1ef9d44d6f634a883641f80109e8b59c928daf"
+checksum = "d611fd5d241872372d52a0a3d309c52d0b95a6a67671a6c8f7ab2c4a37fb2539"
 dependencies = [
  "bytes 0.4.12",
  "either",
  "futures 0.3.8",
  "thiserror",
- "tokio 0.2.22",
+ "tokio 0.2.23",
 ]
 
 [[package]]
@@ -3664,7 +3723,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a70f4fcd7b3b24fb194f837560168208f669ca8cb70d0c4b862944452396343"
 dependencies = [
  "native-tls",
- "tokio 0.2.22",
+ "tokio 0.2.23",
 ]
 
 [[package]]
@@ -3710,8 +3769,8 @@ dependencies = [
  "futures-core",
  "futures-sink",
  "log 0.4.11",
- "pin-project-lite",
- "tokio 0.2.22",
+ "pin-project-lite 0.1.11",
+ "tokio 0.2.23",
 ]
 
 [[package]]
@@ -3737,7 +3796,7 @@ checksum = "b0987850db3733619253fe60e17cb59b82d37c7e6c0236bb81e4d6b87c879f27"
 dependencies = [
  "cfg-if 0.1.10",
  "log 0.4.11",
- "pin-project-lite",
+ "pin-project-lite 0.1.11",
  "tracing-core",
 ]
 
@@ -3750,6 +3809,16 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "tracing-futures"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab7bb6f14721aa00656086e9335d363c5c8747bae02ebe32ea2c7dece5689b4c"
+dependencies = [
+ "pin-project 0.4.27",
+ "tracing",
+]
+
 [[package]]
 name = "try-lock"
 version = "0.1.0"
@@ -3797,18 +3866,18 @@ dependencies = [
 
 [[package]]
 name = "unicode-normalization"
-version = "0.1.13"
+version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6fb19cf769fa8c6a80a162df694621ebeb4dafb606470b2b2fce0be40a98a977"
+checksum = "a13e63ab62dbe32aeee58d1c5408d35c36c392bba5d9d3142287219721afe606"
 dependencies = [
  "tinyvec",
 ]
 
 [[package]]
 name = "unicode-segmentation"
-version = "1.6.0"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e83e153d1053cbb5a118eeff7fd5be06ed99153f00dbcd8ae310c5fb2b22edc0"
+checksum = "db8716a166f290ff49dabc18b44aa407cb7c6dbe1aa0971b44b8a24b0ca35aae"
 
 [[package]]
 name = "unicode-width"
@@ -3847,10 +3916,11 @@ dependencies = [
 
 [[package]]
 name = "url"
-version = "2.1.1"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "829d4a8476c35c9bf0bbce5a3b23f4106f79728039b726d292bb93bc106787cb"
+checksum = "5909f2b0817350449ed73e8bcd81c8c3c8d9a7a5d8acba4b27db277f1868976e"
 dependencies = [
+ "form_urlencoded",
  "idna 0.2.0",
  "matches",
  "percent-encoding 2.1.0",
@@ -4011,6 +4081,30 @@ version = "0.2.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1d649a3145108d7d3fbcde896a468d1bd636791823c9921135218ad89be08307"
 
+[[package]]
+name = "wasm-bindgen-test"
+version = "0.3.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34d1cdc8b98a557f24733d50a1199c4b0635e465eecba9c45b214544da197f64"
+dependencies = [
+ "console_error_panic_hook",
+ "js-sys",
+ "scoped-tls 1.0.0",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wasm-bindgen-test-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-test-macro"
+version = "0.3.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8fb9c67be7439ee8ab1b7db502a49c05e51e2835b66796c705134d9b8e1a585"
+dependencies = [
+ "proc-macro2 1.0.24",
+ "quote 1.0.7",
+]
+
 [[package]]
 name = "web-sys"
 version = "0.3.45"
diff --git a/src/main.rs b/src/main.rs
index 6b378ab..3ac9132 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -309,7 +309,7 @@ fn main() {
                 let mut main = s.find_name::<ui::layout::Layout>("main").unwrap();
                 main.clear_cmdline();
             }
-            if cmd.starts_with('/') {
+            if cmd.strip_prefix('/').is_some() {
                 let query = &cmd[1..];
                 let command = Command::Jump(JumpMode::Query(query.to_string()));
                 if let Some(data) = s.user_data::<UserData>().cloned() {
diff --git a/src/mpris.rs b/src/mpris.rs
index 0b2ee8a..24922f1 100644
--- a/src/mpris.rs
+++ b/src/mpris.rs
@@ -47,7 +47,7 @@ fn get_metadata(playable: Option<Playable>) -> Metadata {
             "/org/ncspot/{}",
             playable
                 .map(|t| t.uri().replace(':', "/"))
-                .unwrap_or("0".to_string())
+                .unwrap_or_else(|| String::from("0"))
         )))),
     );
     hm.insert(
@@ -268,7 +268,7 @@ fn run_dbus_server(
                 Ok(())
             })
     };
-        
+
     let property_volume = {
         let spotify1 = spotify.clone();
         let spotify2 = spotify.clone();
@@ -366,7 +366,6 @@ fn run_dbus_server(
     let property_shuffle = {
         let queue_get = queue.clone();
         let queue_set = queue.clone();
-        let event = ev.clone();
         f.property::<bool, _>("Shuffle", ())
             .access(Access::ReadWrite)
             .on_get(move |iter, _| {
@@ -378,7 +377,7 @@ fn run_dbus_server(
                 if let Some(shuffle_state) = iter.get() {
                     queue_set.set_shuffle(shuffle_state);
                 }
-                event.trigger();
+                ev.trigger();
                 Ok(())
             })
     };
diff --git a/src/ui/contextmenu.rs b/src/ui/contextmenu.rs
index ee0ffe8..bb11554 100644
--- a/src/ui/contextmenu.rs
+++ b/src/ui/contextmenu.rs
@@ -67,10 +67,8 @@ impl ContextMenu {
 
                 let modal = Modal::new(already_added_dialog);
                 s.add_layer(modal);
-
-                return;
             } else {
-                playlist.append_tracks(&[track.clone()], spotify, library);
+                playlist.append_tracks(&[track], spotify, library);
                 s.pop_layer();
             }
         });
diff --git a/src/ui/listview.rs b/src/ui/listview.rs
index 4cacccf..ffa3602 100644
--- a/src/ui/listview.rs
+++ b/src/ui/listview.rs
@@ -579,7 +579,8 @@ impl<I: ListItem + Clone> ViewExt for ListView<I> {
                 let spotify = self.queue.get_spotify();
 
                 let re =
-                    Regex::new(r"https?://open\.spotify\.com/(user/[^/]+/)?(\S+)/(\S+)(\?si=\S+)?").unwrap();
+                    Regex::new(r"https?://open\.spotify\.com/(user/[^/]+/)?(\S+)/(\S+)(\?si=\S+)?")
+                        .unwrap();
                 let captures = re.captures(&url);
 
                 if let Some(captures) = captures {