chore(dependencies): Bump lolex from 1.6.0 to 2.3.1

Bumps [lolex](https://github.com/sinonjs/lolex) from 1.6.0 to 2.3.1.
- [Changelog](https://github.com/sinonjs/lolex/blob/master/History.md)
- [Commits](https://github.com/sinonjs/lolex/compare/v1.6.0...v2.3.1)

package.json

@@ -77,7 +77,7 @@
     "karma-sourcemap-loader": "^0.3.7",
     "karma-spec-reporter": "0.0.31",
     "karma-webpack": "^2.0.6",
-    "lolex": "^1.5.2",
+    "lolex": "^2.3.1",
     "mocha": "^4.0.1",
     "nightwatch": "^0.9.12",
     "node-sass": "^4.7.2",

yarn.lock

@@ -4005,7 +4005,7 @@ log4js@^0.6.31:
     readable-stream "~1.0.2"
     semver "~4.3.3"
 
-lolex@^1.5.2, lolex@^1.6.0:
+lolex@^1.6.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/lolex/-/lolex-1.6.0.tgz#3a9a0283452a47d7439e72731b9e07d7386e49f6"
 
@@ -4013,6 +4013,10 @@ lolex@^2.2.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/lolex/-/lolex-2.3.0.tgz#d6bad0f0aa5caebffcfebb09fb2caa89baaff51c"
 
+lolex@^2.3.1:
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/lolex/-/lolex-2.3.1.tgz#3d2319894471ea0950ef64692ead2a5318cff362"
+
 longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"