diff --git a/yarn.lock b/yarn.lock
index 751d379..258ece9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -549,6 +549,36 @@
     lodash "^4.17.10"
     to-fast-properties "^2.0.0"
 
+"@ffmpeg-installer/darwin-x64@4.0.6":
+  version "4.0.6"
+  resolved "https://registry.yarnpkg.com/@ffmpeg-installer/darwin-x64/-/darwin-x64-4.0.6.tgz#366c0ee40160e0e6b6e4748f97a2bd9dd45d9e68"
+
+"@ffmpeg-installer/ffmpeg@^1.0.15":
+  version "1.0.15"
+  resolved "https://registry.yarnpkg.com/@ffmpeg-installer/ffmpeg/-/ffmpeg-1.0.15.tgz#e7eb92710971e73eb29986eda32359edfdc4f0df"
+  optionalDependencies:
+    "@ffmpeg-installer/darwin-x64" "4.0.6"
+    "@ffmpeg-installer/linux-ia32" "4.0.4"
+    "@ffmpeg-installer/linux-x64" "4.0.4"
+    "@ffmpeg-installer/win32-ia32" "4.0.4"
+    "@ffmpeg-installer/win32-x64" "4.0.3"
+
+"@ffmpeg-installer/linux-ia32@4.0.4":
+  version "4.0.4"
+  resolved "https://registry.yarnpkg.com/@ffmpeg-installer/linux-ia32/-/linux-ia32-4.0.4.tgz#b8d2c789f2b481f032b9c74efd648699768f1693"
+
+"@ffmpeg-installer/linux-x64@4.0.4":
+  version "4.0.4"
+  resolved "https://registry.yarnpkg.com/@ffmpeg-installer/linux-x64/-/linux-x64-4.0.4.tgz#0d550a1de1dd506c8a71c896013a58527f3d2604"
+
+"@ffmpeg-installer/win32-ia32@4.0.4":
+  version "4.0.4"
+  resolved "https://registry.yarnpkg.com/@ffmpeg-installer/win32-ia32/-/win32-ia32-4.0.4.tgz#f620bbec3c1c0452e9263709317e18cd2f1ce954"
+
+"@ffmpeg-installer/win32-x64@4.0.3":
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/@ffmpeg-installer/win32-x64/-/win32-x64-4.0.3.tgz#ff9cf465f5a1a46c2a0334f745aa8bec3b3f48a9"
+
 "@types/node@*":
   version "10.7.1"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-10.7.1.tgz#b704d7c259aa40ee052eec678758a68d07132a2e"
@@ -769,7 +799,7 @@ ansi-styles@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
 
-ansi-styles@^3.2.1:
+ansi-styles@^3.2.0, ansi-styles@^3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
   dependencies:
@@ -811,6 +841,10 @@ arr-union@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/arr-union/-/arr-union-3.1.0.tgz#e39b09aea9def866a8f206e288af63919bae39c4"
 
+array-filter@~0.0.0:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/array-filter/-/array-filter-0.0.1.tgz#7da8cf2e26628ed732803581fd21f67cacd2eeec"
+
 array-find-index@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/array-find-index/-/array-find-index-1.0.2.tgz#df010aa1287e164bbda6f9723b0a96a1ec4187a1"
@@ -830,6 +864,14 @@ array-includes@^3.0.3:
     define-properties "^1.1.2"
     es-abstract "^1.7.0"
 
+array-map@~0.0.0:
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/array-map/-/array-map-0.0.0.tgz#88a2bab73d1cf7bcd5c1b118a003f66f665fa662"
+
+array-reduce@~0.0.0:
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/array-reduce/-/array-reduce-0.0.0.tgz#173899d3ffd1c7d9383e4479525dbe278cab5f2b"
+
 array-union@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/array-union/-/array-union-1.0.2.tgz#9a34410e4f4e3da23dea375be5be70f24778ec39"
@@ -886,6 +928,10 @@ babel-code-frame@^6.26.0:
     esutils "^2.0.2"
     js-tokens "^3.0.2"
 
+babel-core@7.0.0-bridge.0:
+  version "7.0.0-bridge.0"
+  resolved "https://registry.yarnpkg.com/babel-core/-/babel-core-7.0.0-bridge.0.tgz#95a492ddd90f9b4e9a4a1da14eb335b87b634ece"
+
 babel-loader@^8.0.0-beta.6:
   version "8.0.0-beta.6"
   resolved "https://registry.yarnpkg.com/babel-loader/-/babel-loader-8.0.0-beta.6.tgz#e28e51e8bd118b97861e6d14880684116e979f30"
@@ -1446,7 +1492,7 @@ cross-spawn@^5.0.1:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
-cross-spawn@^6.0.5:
+cross-spawn@^6.0.4, cross-spawn@^6.0.5:
   version "6.0.5"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
   dependencies:
@@ -1774,6 +1820,10 @@ domutils@^1.5.1:
     dom-serializer "0"
     domelementtype "1"
 
+duplexer@~0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/duplexer/-/duplexer-0.1.1.tgz#ace6ff808c1ce66b57d1ebf97977acb02334cfc1"
+
 duplexify@^3.4.2, duplexify@^3.6.0:
   version "3.6.0"
   resolved "https://registry.yarnpkg.com/duplexify/-/duplexify-3.6.0.tgz#592903f5d80b38d037220541264d69a198fb3410"
@@ -1835,13 +1885,13 @@ errno@^0.1.3, errno@~0.1.7:
   dependencies:
     prr "~1.0.1"
 
-error-ex@^1.2.0:
+error-ex@^1.2.0, error-ex@^1.3.1:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.2.tgz#b4ac40648107fdcdcfae242f428bea8a14d4f1bf"
   dependencies:
     is-arrayish "^0.2.1"
 
-es-abstract@^1.5.1, es-abstract@^1.6.1, es-abstract@^1.7.0:
+es-abstract@^1.4.3, es-abstract@^1.5.1, es-abstract@^1.6.1, es-abstract@^1.7.0:
   version "1.12.0"
   resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.12.0.tgz#9dbbdd27c6856f0001421ca18782d786bf8a6165"
   dependencies:
@@ -2024,6 +2074,18 @@ etag@~1.8.1:
   version "1.8.1"
   resolved "https://registry.yarnpkg.com/etag/-/etag-1.8.1.tgz#41ae2eeb65efa62268aebfea83ac7d79299b0887"
 
+event-stream@~3.3.0:
+  version "3.3.4"
+  resolved "http://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz#4ab4c9a0f5a54db9338b4c34d86bfce8f4b35571"
+  dependencies:
+    duplexer "~0.1.1"
+    from "~0"
+    map-stream "~0.1.0"
+    pause-stream "0.0.11"
+    split "0.3"
+    stream-combiner "~0.0.4"
+    through "~2.3.1"
+
 eventemitter3@^3.0.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-3.1.0.tgz#090b4d6cdbd645ed10bf750d4b5407942d7ba163"
@@ -2293,6 +2355,10 @@ from2@^2.1.0:
     inherits "^2.0.1"
     readable-stream "^2.0.0"
 
+from@~0:
+  version "0.1.7"
+  resolved "https://registry.yarnpkg.com/from/-/from-0.1.7.tgz#83c60afc58b9c56997007ed1a768b3ab303a44fe"
+
 fs-minipass@^1.2.5:
   version "1.2.5"
   resolved "https://registry.yarnpkg.com/fs-minipass/-/fs-minipass-1.2.5.tgz#06c277218454ec288df77ada54a03b8702aacb9d"
@@ -2323,7 +2389,7 @@ fsevents@^1.2.2:
     nan "^2.9.2"
     node-pre-gyp "^0.10.0"
 
-function-bind@^1.1.0, function-bind@^1.1.1:
+function-bind@^1.0.2, function-bind@^1.1.0, function-bind@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
 
@@ -2994,7 +3060,7 @@ jsesc@~0.5.0:
   version "0.5.0"
   resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-0.5.0.tgz#e7dee66e35d6fc16f710fe91d5cf69f70f08911d"
 
-json-parse-better-errors@^1.0.2:
+json-parse-better-errors@^1.0.1, json-parse-better-errors@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz#bb867cfb3450e69107c131d1c514bab3dc8bcaa9"
 
@@ -3014,6 +3080,10 @@ json5@^0.5.0:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/json5/-/json5-0.5.1.tgz#1eade7acc012034ad84e2396767ead9fa5495821"
 
+jsonify@~0.0.0:
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/jsonify/-/jsonify-0.0.0.tgz#2c74b6ee41d93ca51b7b5aaee8f503631d252a73"
+
 killable@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/killable/-/killable-1.0.0.tgz#da8b84bd47de5395878f95d64d02f2449fe05e6b"
@@ -3070,6 +3140,15 @@ load-json-file@^2.0.0:
     pify "^2.0.0"
     strip-bom "^3.0.0"
 
+load-json-file@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/load-json-file/-/load-json-file-4.0.0.tgz#2f5f45ab91e33216234fd53adab668eb4ec0993b"
+  dependencies:
+    graceful-fs "^4.1.2"
+    parse-json "^4.0.0"
+    pify "^3.0.0"
+    strip-bom "^3.0.0"
+
 loader-runner@^2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/loader-runner/-/loader-runner-2.3.0.tgz#f482aea82d543e07921700d5a46ef26fdac6b8a2"
@@ -3262,6 +3341,10 @@ map-obj@^1.0.0, map-obj@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/map-obj/-/map-obj-1.0.1.tgz#d933ceb9205d82bdcf4886f6742bdc2b4dea146d"
 
+map-stream@~0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/map-stream/-/map-stream-0.1.0.tgz#e56aa94c4c8055a16404a0674b78f215f7c8e194"
+
 map-visit@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/map-visit/-/map-visit-1.0.0.tgz#ecdca8f13144e660f1b5bd41f12f3479d98dfb8f"
@@ -3292,6 +3375,10 @@ memory-fs@^0.4.0, memory-fs@~0.4.1:
     errno "^0.1.3"
     readable-stream "^2.0.1"
 
+memorystream@^0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/memorystream/-/memorystream-0.3.1.tgz#86d7090b30ce455d63fbae12dda51a47ddcaf9b2"
+
 meow@^3.3.0:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/meow/-/meow-3.7.0.tgz#72cb668b425228290abbfa856892587308a801fb"
@@ -3597,6 +3684,20 @@ npm-packlist@^1.1.6:
     ignore-walk "^3.0.1"
     npm-bundled "^1.0.1"
 
+npm-run-all@^4.1.3:
+  version "4.1.3"
+  resolved "https://registry.yarnpkg.com/npm-run-all/-/npm-run-all-4.1.3.tgz#49f15b55a66bb4101664ce270cb18e7103f8f185"
+  dependencies:
+    ansi-styles "^3.2.0"
+    chalk "^2.1.0"
+    cross-spawn "^6.0.4"
+    memorystream "^0.3.1"
+    minimatch "^3.0.4"
+    ps-tree "^1.1.0"
+    read-pkg "^3.0.0"
+    shell-quote "^1.6.1"
+    string.prototype.padend "^3.0.0"
+
 npm-run-path@^2.0.0:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/npm-run-path/-/npm-run-path-2.0.2.tgz#35a9232dfa35d7067b4cb2ddf2357b1871536c5f"
@@ -3837,6 +3938,13 @@ parse-json@^2.2.0:
   dependencies:
     error-ex "^1.2.0"
 
+parse-json@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-4.0.0.tgz#be35f5425be1f7f6c747184f98a788cb99477ee0"
+  dependencies:
+    error-ex "^1.3.1"
+    json-parse-better-errors "^1.0.1"
+
 parse-passwd@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/parse-passwd/-/parse-passwd-1.0.0.tgz#6d5b934a456993b23d37f40a382d6f1666a8e5c6"
@@ -3907,6 +4015,18 @@ path-type@^2.0.0:
   dependencies:
     pify "^2.0.0"
 
+path-type@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/path-type/-/path-type-3.0.0.tgz#cef31dc8e0a1a3bb0d105c0cd97cf3bf47f4e36f"
+  dependencies:
+    pify "^3.0.0"
+
+pause-stream@0.0.11:
+  version "0.0.11"
+  resolved "https://registry.yarnpkg.com/pause-stream/-/pause-stream-0.0.11.tgz#fe5a34b0cbce12b5aa6a2b403ee2e73b602f1445"
+  dependencies:
+    through "~2.3"
+
 pbkdf2@^3.0.3:
   version "3.0.16"
   resolved "https://registry.yarnpkg.com/pbkdf2/-/pbkdf2-3.0.16.tgz#7404208ec6b01b62d85bf83853a8064f8d9c2a5c"
@@ -4050,6 +4170,12 @@ prr@~1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/prr/-/prr-1.0.1.tgz#d3fc114ba06995a45ec6893f484ceb1d78f5f476"
 
+ps-tree@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/ps-tree/-/ps-tree-1.1.0.tgz#b421b24140d6203f1ed3c76996b4427b08e8c014"
+  dependencies:
+    event-stream "~3.3.0"
+
 pseudomap@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/pseudomap/-/pseudomap-1.0.2.tgz#f052a28da70e618917ef0a8ac34c1ae5a68286b3"
@@ -4172,6 +4298,14 @@ read-pkg@^2.0.0:
     normalize-package-data "^2.3.2"
     path-type "^2.0.0"
 
+read-pkg@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/read-pkg/-/read-pkg-3.0.0.tgz#9cbc686978fee65d16c00e2b19c237fcf6e38389"
+  dependencies:
+    load-json-file "^4.0.0"
+    normalize-package-data "^2.3.2"
+    path-type "^3.0.0"
+
 "readable-stream@1 || 2", readable-stream@^2.0.0, readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.0.4, readable-stream@^2.0.6, readable-stream@^2.1.5, readable-stream@^2.2.2, readable-stream@^2.2.9, readable-stream@^2.3.3, readable-stream@^2.3.6:
   version "2.3.6"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.6.tgz#b11c27d88b8ff1fbe070643cf94b0c79ae1b0aaf"
@@ -4594,6 +4728,15 @@ shebang-regex@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-1.0.0.tgz#da42f49740c0b42db2ca9728571cb190c98efea3"
 
+shell-quote@^1.6.1:
+  version "1.6.1"
+  resolved "https://registry.yarnpkg.com/shell-quote/-/shell-quote-1.6.1.tgz#f4781949cce402697127430ea3b3c5476f481767"
+  dependencies:
+    array-filter "~0.0.0"
+    array-map "~0.0.0"
+    array-reduce "~0.0.0"
+    jsonify "~0.0.0"
+
 signal-exit@^3.0.0, signal-exit@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
@@ -4738,6 +4881,12 @@ split-string@^3.0.1, split-string@^3.0.2:
   dependencies:
     extend-shallow "^3.0.0"
 
+split@0.3:
+  version "0.3.3"
+  resolved "https://registry.yarnpkg.com/split/-/split-0.3.3.tgz#cd0eea5e63a211dfff7eb0f091c4133e2d0dd28f"
+  dependencies:
+    through "2"
+
 sprintf-js@~1.0.2:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
@@ -4770,6 +4919,12 @@ stream-browserify@^2.0.1:
     inherits "~2.0.1"
     readable-stream "^2.0.2"
 
+stream-combiner@~0.0.4:
+  version "0.0.4"
+  resolved "https://registry.yarnpkg.com/stream-combiner/-/stream-combiner-0.0.4.tgz#4d5e433c185261dde623ca3f44c586bcf5c4ad14"
+  dependencies:
+    duplexer "~0.1.1"
+
 stream-each@^1.1.0:
   version "1.2.3"
   resolved "https://registry.yarnpkg.com/stream-each/-/stream-each-1.2.3.tgz#ebe27a0c389b04fbcc233642952e10731afa9bae"
@@ -4806,6 +4961,14 @@ string-width@^1.0.1:
     is-fullwidth-code-point "^2.0.0"
     strip-ansi "^4.0.0"
 
+string.prototype.padend@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/string.prototype.padend/-/string.prototype.padend-3.0.0.tgz#f3aaef7c1719f170c5eab1c32bf780d96e21f2f0"
+  dependencies:
+    define-properties "^1.1.2"
+    es-abstract "^1.4.3"
+    function-bind "^1.0.2"
+
 string_decoder@^1.0.0, string_decoder@~1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
@@ -4930,7 +5093,7 @@ through2@^2.0.0:
     readable-stream "^2.1.5"
     xtend "~4.0.1"
 
-through@^2.3.6:
+through@2, through@^2.3.6, through@~2.3, through@~2.3.1:
   version "2.3.8"
   resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"