update dependencies to latest version

Author: tiagoschenkel

package.json

@@ -64,9 +64,9 @@
   "homepage": "https://github.com/RobotlegsJS/SignalsJS#readme",
   "devDependencies": {
     "@types/bluebird": "^3.5.20",
-    "@types/chai": "^4.1.2",
-    "@types/mocha": "^5.0.0",
-    "@types/sinon": "^4.3.0",
+    "@types/chai": "^4.1.3",
+    "@types/mocha": "^5.2.0",
+    "@types/sinon": "^4.3.3",
     "bluebird": "^3.5.1",
     "browserify-versionify": "^1.0.6",
     "chai": "^4.1.2",
@@ -76,11 +76,11 @@
     "imports-loader": "^0.8.0",
     "istanbul": "^0.4.5",
     "istanbul-instrumenter-loader": "^3.0.1",
-    "karma": "^2.0.0",
+    "karma": "^2.0.2",
     "karma-chai": "^0.1.0",
     "karma-chai-sinon": "^0.1.5",
     "karma-chrome-launcher": "^2.2.0",
-    "karma-coverage-istanbul-reporter": "^1.4.2",
+    "karma-coverage-istanbul-reporter": "^2.0.0",
     "karma-es6-shim": "^1.0.0",
     "karma-mocha": "^1.3.0",
     "karma-mocha-reporter": "^2.2.5",
@@ -90,24 +90,24 @@
     "karma-sourcemap-loader": "^0.3.7",
     "karma-sourcemap-writer": "^0.1.2",
     "karma-webpack": "^3.0.0",
-    "mocha": "^5.0.5",
-    "nyc": "^11.6.0",
-    "prettier": "^1.11.1",
+    "mocha": "^5.2.0",
+    "nyc": "^11.8.0",
+    "prettier": "^1.12.1",
     "publish-please": "^2.4.1",
     "reflect-metadata": "^0.1.12",
-    "remap-istanbul": "^0.11.0",
+    "remap-istanbul": "^0.11.1",
     "rimraf": "^2.6.2",
-    "sinon": "^5.0.0",
+    "sinon": "^5.0.7",
     "sinon-chai": "^3.0.0",
-    "source-map-support": "^0.5.4",
-    "ts-loader": "^4.1.0",
-    "ts-node": "^5.0.1",
-    "tslint": "^5.9.1",
-    "tslint-config-prettier": "^1.10.0",
-    "typescript": "^2.8.1",
-    "uglifyjs-webpack-plugin": "^1.2.4",
-    "webpack": "^4.4.1",
-    "webpack-cli": "^2.0.13",
-    "webpack-dev-server": "^3.1.1"
+    "source-map-support": "^0.5.6",
+    "ts-loader": "^4.3.0",
+    "ts-node": "^6.0.3",
+    "tslint": "^5.10.0",
+    "tslint-config-prettier": "^1.13.0",
+    "typescript": "^2.8.3",
+    "uglifyjs-webpack-plugin": "^1.2.5",
+    "webpack": "^4.8.3",
+    "webpack-cli": "^2.1.3",
+    "webpack-dev-server": "^3.1.4"
   }
 }