update deps

yarn.lock

@@ -1392,12 +1392,6 @@ dateformat@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/dateformat/-/dateformat-2.0.0.tgz#2743e3abb5c3fc2462e527dca445e04e9f4dee17"
 
-debug@2.6.0:
-  version "2.6.0"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.0.tgz#bc596bcabe7617f11d9fa15361eded5608b8499b"
-  dependencies:
-    ms "0.7.2"
-
 debug@2.6.8, debug@^2.1.1, debug@^2.2.0, debug@^2.6.3, debug@^2.6.8:
   version "2.6.8"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.8.tgz#e731531ca2ede27d188222427da17821d68ff4fc"
@@ -2742,8 +2736,8 @@ js-tokens@^3.0.0:
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
 
 js-yaml@^3.7.0, js-yaml@^3.8.4:
-  version "3.9.0"
-  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.9.0.tgz#4ffbbf25c2ac963b8299dc74da7e3740de1c18ce"
+  version "3.9.1"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.9.1.tgz#08775cebdfdd359209f0d2acd383c8f86a6904a0"
   dependencies:
     argparse "^1.0.7"
     esprima "^4.0.0"
@@ -3158,12 +3152,12 @@ mobx@2.x.x:
   resolved "https://registry.yarnpkg.com/mobx/-/mobx-2.7.0.tgz#cf3d82d18c0ca7f458d8f2a240817b3dc7e54a01"
 
 mocha@3.x.x:
-  version "3.4.2"
-  resolved "https://registry.yarnpkg.com/mocha/-/mocha-3.4.2.tgz#d0ef4d332126dbf18d0d640c9b382dd48be97594"
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-3.5.0.tgz#1328567d2717f997030f8006234bce9b8cd72465"
   dependencies:
     browser-stdout "1.3.0"
     commander "2.9.0"
-    debug "2.6.0"
+    debug "2.6.8"
     diff "3.2.0"
     escape-string-regexp "1.0.5"
     glob "7.1.1"
@@ -4664,8 +4658,8 @@ which-module@^1.0.0:
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-1.0.0.tgz#bba63ca861948994ff307736089e3b96026c2a4f"
 
 which@^1.2.12, which@^1.2.9:
-  version "1.2.14"
-  resolved "https://registry.yarnpkg.com/which/-/which-1.2.14.tgz#9a87c4378f03e827cecaf1acdf56c736c01c14e5"
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/which/-/which-1.3.0.tgz#ff04bdfc010ee547d780bec38e1ac1c2777d253a"
   dependencies:
     isexe "^2.0.0"