diff --git a/yarn.lock b/yarn.lock
index c8870ee..cd97b01 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -166,20 +166,26 @@ async-each@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/async-each/-/async-each-1.0.1.tgz#19d386a1d9edc6e7c1c85d388aedbcc56d33602d"
 
-async@1.5.2, async@^1.4.0:
-  version "1.5.2"
-  resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
-
 async@2.5.0, async@^2.0.1:
   version "2.5.0"
   resolved "https://registry.yarnpkg.com/async/-/async-2.5.0.tgz#843190fd6b7357a0b9e1c956edddd5ec8462b54d"
   dependencies:
     lodash "^4.14.0"
 
+async@2.6.2:
+  version "2.6.2"
+  resolved "https://registry.yarnpkg.com/async/-/async-2.6.2.tgz#18330ea7e6e313887f5d2f2a904bac6fe4dd5381"
+  dependencies:
+    lodash "^4.17.11"
+
 async@^0.9.0:
   version "0.9.2"
   resolved "https://registry.yarnpkg.com/async/-/async-0.9.2.tgz#aea74d5e61c1f899613bf64bda66d4c78f2fd17d"
 
+async@^1.4.0:
+  version "1.5.2"
+  resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
+
 asynckit@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
@@ -242,7 +248,11 @@ block-stream@*:
   dependencies:
     inherits "~2.0.0"
 
-bluebird@2.10.2, bluebird@^2.6.2:
+bluebird@3.5.1:
+  version "3.5.1"
+  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.1.tgz#d9551f9de98f1fcda1e683d17ee91a0602ee2eb9"
+
+bluebird@^2.6.2:
   version "2.10.2"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-2.10.2.tgz#024a5517295308857f14f91f1106fc3b555f446b"
 
@@ -434,9 +444,9 @@ browserify@14.4.0:
     vm-browserify "~0.0.1"
     xtend "^4.0.0"
 
-bson@0.4.21, bson@~0.4.21:
-  version "0.4.21"
-  resolved "https://registry.yarnpkg.com/bson/-/bson-0.4.21.tgz#b8eae38c5aa94f7b8e64e8cfed0f42e58308ed95"
+bson@^1.1.1, bson@~1.1.1:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/bson/-/bson-1.1.4.tgz#f76870d799f15b854dffb7ee32f0a874797f7e89"
 
 btoa@1.1.2:
   version "1.1.2"
@@ -789,11 +799,11 @@ dbug@~0.4.2:
   version "0.4.2"
   resolved "https://registry.yarnpkg.com/dbug/-/dbug-0.4.2.tgz#32b4b3105e8861043a6f9ac755d80e542d365b31"
 
-debug@2.2.0, debug@~2.2.0:
-  version "2.2.0"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-2.2.0.tgz#f87057e995b1a1f6ae6a4960664137bc56f039da"
+debug@3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
   dependencies:
-    ms "0.7.1"
+    ms "2.0.0"
 
 debug@^2.2.0, debug@^2.6.8:
   version "2.6.8"
@@ -801,6 +811,12 @@ debug@^2.2.0, debug@^2.6.8:
   dependencies:
     ms "2.0.0"
 
+debug@~2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.2.0.tgz#f87057e995b1a1f6ae6a4960664137bc56f039da"
+  dependencies:
+    ms "0.7.1"
+
 decamelize@^1.0.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
@@ -991,10 +1007,6 @@ es-to-primitive@^1.1.1:
     is-date-object "^1.0.1"
     is-symbol "^1.0.1"
 
-es6-promise@3.0.2:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-3.0.2.tgz#010d5858423a5f118979665f46486a95c6ee2bb6"
-
 es6-promise@^3.3.1:
   version "3.3.1"
   resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-3.3.1.tgz#a08cdde84ccdbf34d027a1451bc91d4bcd28a613"
@@ -1274,8 +1286,10 @@ gauge@~2.7.3:
     wide-align "^1.1.0"
 
 generate-function@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/generate-function/-/generate-function-2.0.0.tgz#6858fe7c0969b7d4e9093337647ac79f60dfbe74"
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/generate-function/-/generate-function-2.3.1.tgz#f069617690c10c868e73b8465746764f97c3479f"
+  dependencies:
+    is-property "^1.0.2"
 
 generate-object-property@^1.1.0:
   version "1.2.0"
@@ -1441,10 +1455,6 @@ hoek@4.x.x:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/hoek/-/hoek-4.2.0.tgz#72d9d0754f7fe25ca2d01ad8f8f9a9449a89526d"
 
-hooks-fixed@1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/hooks-fixed/-/hooks-fixed-1.1.0.tgz#0e8c15336708e6611185fe390b44687dd5230dbb"
-
 htmlescape@^1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/htmlescape/-/htmlescape-1.1.1.tgz#3a03edc2214bca3b66424a3e7959349509cb0351"
@@ -1658,12 +1668,17 @@ is-glob@^2.0.0, is-glob@^2.0.1:
   dependencies:
     is-extglob "^1.0.0"
 
+is-my-ip-valid@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-my-ip-valid/-/is-my-ip-valid-1.0.0.tgz#7b351b8e8edd4d3995d4d066680e664d94696824"
+
 is-my-json-valid@^2.12.4:
-  version "2.16.1"
-  resolved "https://registry.yarnpkg.com/is-my-json-valid/-/is-my-json-valid-2.16.1.tgz#5a846777e2c2620d1e69104e5d3a03b1f6088f11"
+  version "2.20.0"
+  resolved "https://registry.yarnpkg.com/is-my-json-valid/-/is-my-json-valid-2.20.0.tgz#1345a6fca3e8daefc10d0fa77067f54cedafd59a"
   dependencies:
     generate-function "^2.0.0"
     generate-object-property "^1.1.0"
+    is-my-ip-valid "^1.0.0"
     jsonpointer "^4.0.0"
     xtend "^4.0.0"
 
@@ -1695,7 +1710,7 @@ is-primitive@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/is-primitive/-/is-primitive-2.0.0.tgz#207bab91638499c07b2adf240a41a87210034575"
 
-is-property@^1.0.0:
+is-property@^1.0.0, is-property@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-property/-/is-property-1.0.2.tgz#57fe1c4e48474edd65b09911f26b1cd4095dda84"
 
@@ -1725,14 +1740,14 @@ is-typedarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-typedarray/-/is-typedarray-1.0.0.tgz#e479c80858df0c1b11ddda6940f96011fcda4a9a"
 
-isarray@0.0.1, isarray@~0.0.1:
-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
-
 isarray@1.0.0, isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
 
+isarray@~0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
+
 isemail@1.x.x:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/isemail/-/isemail-1.2.0.tgz#be03df8cc3e29de4d2c5df6501263f1fa4595e9a"
@@ -1844,9 +1859,9 @@ jws@^3.0.0, jws@^3.1.3:
     jwa "^1.1.4"
     safe-buffer "^5.0.1"
 
-kareem@1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/kareem/-/kareem-1.0.1.tgz#7805d215bb53214ec3af969a1d0b1f17e3e7b95c"
+kareem@2.3.1:
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/kareem/-/kareem-2.3.1.tgz#def12d9c941017fabfb00f873af95e9c99e1be87"
 
 kind-of@^3.0.2:
   version "3.2.2"
@@ -1982,6 +1997,10 @@ lodash@^3.10.1, lodash@~3.10.1:
   version "3.10.1"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
 
+lodash@^4.17.11:
+  version "4.17.15"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
+
 longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
@@ -2022,6 +2041,10 @@ media-typer@0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
 
+memory-pager@^1.0.2:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/memory-pager/-/memory-pager-1.5.0.tgz#d8751655d22d384682741c972f2c3d6dfa3e66b5"
+
 merge-descriptors@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/merge-descriptors/-/merge-descriptors-1.0.1.tgz#b00aaa556dd8b44568150ec9d1b953f3f90cbb61"
@@ -2146,43 +2169,50 @@ moment@2.x.x:
   version "2.18.1"
   resolved "https://registry.yarnpkg.com/moment/-/moment-2.18.1.tgz#c36193dd3ce1c2eed2adb7c802dbbc77a81b1c0f"
 
-mongodb-core@1.3.9:
-  version "1.3.9"
-  resolved "https://registry.yarnpkg.com/mongodb-core/-/mongodb-core-1.3.9.tgz#39db2f5211fe8fc8a7a618926b079081147d4e6e"
+mongodb-core@3.2.7:
+  version "3.2.7"
+  resolved "https://registry.yarnpkg.com/mongodb-core/-/mongodb-core-3.2.7.tgz#a8ef1fe764a192c979252dacbc600dc88d77e28f"
   dependencies:
-    bson "~0.4.21"
-    require_optional "~1.0.0"
+    bson "^1.1.1"
+    require_optional "^1.0.1"
+    safe-buffer "^5.1.2"
+  optionalDependencies:
+    saslprep "^1.0.0"
 
-mongodb@2.1.10:
-  version "2.1.10"
-  resolved "https://registry.yarnpkg.com/mongodb/-/mongodb-2.1.10.tgz#d24a7ab58516cbbeee7c256d4fb00a774f8e4d4f"
+mongodb@3.2.7:
+  version "3.2.7"
+  resolved "https://registry.yarnpkg.com/mongodb/-/mongodb-3.2.7.tgz#8ba149e4be708257cad0dea72aebb2bbb311a7ac"
   dependencies:
-    es6-promise "3.0.2"
-    mongodb-core "1.3.9"
-    readable-stream "1.0.31"
+    mongodb-core "3.2.7"
+    safe-buffer "^5.1.2"
 
-mongoose-unique-validator@1.0.2:
+mongoose-legacy-pluralize@1.0.2:
   version "1.0.2"
-  resolved "https://registry.yarnpkg.com/mongoose-unique-validator/-/mongoose-unique-validator-1.0.2.tgz#f12bb892918bd95e19cb62beb3c00b044ab25ea0"
+  resolved "https://registry.yarnpkg.com/mongoose-legacy-pluralize/-/mongoose-legacy-pluralize-1.0.2.tgz#3ba9f91fa507b5186d399fb40854bff18fb563e4"
+
+mongoose-unique-validator@2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/mongoose-unique-validator/-/mongoose-unique-validator-2.0.3.tgz#247adbcda391bf5bc63fc3dcd43286a9ec833fa4"
   dependencies:
     lodash.foreach "^4.1.0"
     lodash.get "^4.0.2"
 
-mongoose@4.4.10:
-  version "4.4.10"
-  resolved "https://registry.yarnpkg.com/mongoose/-/mongoose-4.4.10.tgz#6277f2f918040868f4aecfbc2833153efb92472f"
+mongoose@5.6.11:
+  version "5.6.11"
+  resolved "https://registry.yarnpkg.com/mongoose/-/mongoose-5.6.11.tgz#c63f557b702a02be8e20ec21d8f7776bdb9bd2d8"
   dependencies:
-    async "1.5.2"
-    bson "0.4.21"
-    hooks-fixed "1.1.0"
-    kareem "1.0.1"
-    mongodb "2.1.10"
-    mpath "0.2.1"
-    mpromise "0.5.5"
-    mquery "1.10.0"
-    ms "0.7.1"
-    muri "1.1.0"
-    regexp-clone "0.0.1"
+    async "2.6.2"
+    bson "~1.1.1"
+    kareem "2.3.1"
+    mongodb "3.2.7"
+    mongodb-core "3.2.7"
+    mongoose-legacy-pluralize "1.0.2"
+    mpath "0.6.0"
+    mquery "3.2.1"
+    ms "2.1.2"
+    regexp-clone "1.0.0"
+    safe-buffer "5.1.2"
+    sift "7.0.1"
     sliced "1.0.1"
 
 morgan@1.7.0:
@@ -2195,22 +2225,19 @@ morgan@1.7.0:
     on-finished "~2.3.0"
     on-headers "~1.0.1"
 
-mpath@0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/mpath/-/mpath-0.2.1.tgz#3a4e829359801de96309c27a6b2e102e89f9e96e"
+mpath@0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/mpath/-/mpath-0.6.0.tgz#aa922029fca4f0f641f360e74c5c1b6a4c47078e"
 
-mpromise@0.5.5:
-  version "0.5.5"
-  resolved "https://registry.yarnpkg.com/mpromise/-/mpromise-0.5.5.tgz#f5b24259d763acc2257b0a0c8c6d866fd51732e6"
-
-mquery@1.10.0:
-  version "1.10.0"
-  resolved "https://registry.yarnpkg.com/mquery/-/mquery-1.10.0.tgz#8603f02b0b524d17ac0539a85996124ee17b7cb3"
+mquery@3.2.1:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/mquery/-/mquery-3.2.1.tgz#8b059a49cdae0a8a9e804284ef64c2f58d3ac05d"
   dependencies:
-    bluebird "2.10.2"
-    debug "2.2.0"
-    regexp-clone "0.0.1"
-    sliced "0.0.5"
+    bluebird "3.5.1"
+    debug "3.1.0"
+    regexp-clone "^1.0.0"
+    safe-buffer "5.1.2"
+    sliced "1.0.1"
 
 ms@0.7.1:
   version "0.7.1"
@@ -2220,14 +2247,14 @@ ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
+ms@2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
+
 ms@^0.7.1:
   version "0.7.3"
   resolved "https://registry.yarnpkg.com/ms/-/ms-0.7.3.tgz#708155a5e44e33f5fd0fc53e81d0d40a91be1fff"
 
-muri@1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/muri/-/muri-1.1.0.tgz#a3a6d74e68a880f433a249a74969cbb665cc0add"
-
 nan@^2.3.0:
   version "2.7.0"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.7.0.tgz#d95bf721ec877e08db276ed3fc6eb78f9083ad46"
@@ -2780,15 +2807,6 @@ read-only-stream@^2.0.0:
   dependencies:
     readable-stream "^2.0.2"
 
-readable-stream@1.0.31:
-  version "1.0.31"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.0.31.tgz#8f2502e0bc9e3b0da1b94520aabb4e2603ecafae"
-  dependencies:
-    core-util-is "~1.0.0"
-    inherits "~2.0.1"
-    isarray "0.0.1"
-    string_decoder "~0.10.x"
-
 readable-stream@^2.0.2, readable-stream@~2.0.0, readable-stream@~2.0.5:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.0.6.tgz#8f90341e68a53ccc928788dacfcd11b36eb9b78e"
@@ -2833,9 +2851,9 @@ regex-cache@^0.4.2:
   dependencies:
     is-equal-shallow "^0.1.3"
 
-regexp-clone@0.0.1:
-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/regexp-clone/-/regexp-clone-0.0.1.tgz#a7c2e09891fdbf38fbb10d376fb73003e68ac589"
+regexp-clone@1.0.0, regexp-clone@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/regexp-clone/-/regexp-clone-1.0.0.tgz#222db967623277056260b992626354a04ce9bf63"
 
 regexp-quote@0.0.0:
   version "0.0.0"
@@ -2919,7 +2937,7 @@ request@^2.81.0:
     tunnel-agent "^0.6.0"
     uuid "^3.1.0"
 
-require_optional@~1.0.0:
+require_optional@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/require_optional/-/require_optional-1.0.1.tgz#4cf35a4247f64ca3df8c2ef208cc494b1ca8fc2e"
   dependencies:
@@ -2969,10 +2987,18 @@ ripemd160@^2.0.0, ripemd160@^2.0.1:
     hash-base "^2.0.0"
     inherits "^2.0.1"
 
+safe-buffer@5.1.2:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
+
 safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
+safe-buffer@^5.1.2:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.0.tgz#b74daec49b1148f88c64b68d49b1e815c1f2f519"
+
 sanitize-html@1.14.1:
   version "1.14.1"
   resolved "https://registry.yarnpkg.com/sanitize-html/-/sanitize-html-1.14.1.tgz#730ffa2249bdf18333effe45b286173c9c5ad0b8"
@@ -2981,6 +3007,12 @@ sanitize-html@1.14.1:
     regexp-quote "0.0.0"
     xtend "^4.0.0"
 
+saslprep@^1.0.0:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/saslprep/-/saslprep-1.0.3.tgz#4c02f946b56cf54297e347ba1093e7acac4cf226"
+  dependencies:
+    sparse-bitfield "^3.0.3"
+
 semver-diff@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/semver-diff/-/semver-diff-2.1.0.tgz#4bbb8437c8d37e4b0cf1a68fd726ec6d645d6d36"
@@ -3089,14 +3121,14 @@ shelljs@0.7.8:
     interpret "^1.0.0"
     rechoir "^0.6.2"
 
+sift@7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/sift/-/sift-7.0.1.tgz#47d62c50b159d316f1372f8b53f9c10cd21a4b08"
+
 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"
 
-sliced@0.0.5:
-  version "0.0.5"
-  resolved "https://registry.yarnpkg.com/sliced/-/sliced-0.0.5.tgz#5edc044ca4eb6f7816d50ba2fc63e25d8fe4707f"
-
 sliced@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/sliced/-/sliced-1.0.1.tgz#0b3a662b5d04c3177b1926bea82b03f837a2ef41"
@@ -3129,6 +3161,12 @@ source-map@~0.5.1, source-map@~0.5.3:
   version "0.5.7"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
 
+sparse-bitfield@^3.0.3:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/sparse-bitfield/-/sparse-bitfield-3.0.3.tgz#ff4ae6e68656056ba4b3e792ab3334d38273ca11"
+  dependencies:
+    memory-pager "^1.0.2"
+
 split@0.3:
   version "0.3.3"
   resolved "https://registry.yarnpkg.com/split/-/split-0.3.3.tgz#cd0eea5e63a211dfff7eb0f091c4133e2d0dd28f"
@@ -3611,8 +3649,8 @@ xmlbuilder@9.0.4:
   resolved "https://registry.yarnpkg.com/xmlbuilder/-/xmlbuilder-9.0.4.tgz#519cb4ca686d005a8420d3496f3f0caeecca580f"
 
 xtend@^4.0.0, xtend@^4.0.1, xtend@~4.0.1:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.1.tgz#a5c6d532be656e23db820efb943a1f04998d63af"
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.2.tgz#bb72779f5fa465186b1f438f674fa347fdb5db54"
 
 yallist@^2.1.2:
   version "2.1.2"