yarn upgrade

// FREEBIE

yarn.lock

@@ -608,13 +608,7 @@ debug@0.7.4, debug@~0.7.0:
   version "0.7.4"
   resolved "https://registry.yarnpkg.com/debug/-/debug-0.7.4.tgz#06e1ea8082c2cb14e39806e22e2f6f757f92af39"
 
-debug@2, debug@^2.1.3, debug@^2.2.0, debug@^2.6.1, debug@^2.6.3:
-  version "2.6.4"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.4.tgz#7586a9b3c39741c0282ae33445c4e8ac74734fe0"
-  dependencies:
-    ms "0.7.3"
-
-debug@2.6.3:
+debug@2, debug@2.6.3, debug@^2.1.3, debug@^2.2.0, debug@^2.6.1, debug@^2.6.3:
   version "2.6.3"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.3.tgz#0f7eb8c30965ec08c72accfa0130c8b79984141d"
   dependencies:
@@ -2018,10 +2012,6 @@ ms@0.7.2:
   version "0.7.2"
   resolved "https://registry.yarnpkg.com/ms/-/ms-0.7.2.tgz#ae25cf2512b3885a1d95d7f037868d8431124765"
 
-ms@0.7.3:
-  version "0.7.3"
-  resolved "https://registry.yarnpkg.com/ms/-/ms-0.7.3.tgz#708155a5e44e33f5fd0fc53e81d0d40a91be1fff"
-
 multiparty@3.3.2:
   version "3.3.2"
   resolved "https://registry.yarnpkg.com/multiparty/-/multiparty-3.3.2.tgz#35de6804dc19643e5249f3d3e3bdc6c8ce301d3f"