Bump some dev dependencies

package.json

@@ -37,9 +37,9 @@
     "chai-as-promised": "^5.3.0",
     "devtron": "^1.3.0",
     "electron-builder": "5.2.1",
-    "electron-connect": "~0.3.9",
+    "electron-connect": "~0.6.0",
     "electron-packager": "^7.0.1",
-    "electron-prebuilt": "1.2.8",
+    "electron-prebuilt": "1.4.2",
     "electron-winstaller": "^2.2.0",
     "esformatter": "^0.9.6",
     "esformatter-jsx": "^7.0.1",
@@ -51,7 +51,7 @@
     "mocha": "^3.0.2",
     "mocha-circleci-reporter": "0.0.2",
     "rimraf": "^2.5.4",
-    "spectron": "~3.2.0",
+    "spectron": "~3.4.0",
     "style-loader": "^0.13.1",
     "through2": "^2.0.1",
     "vinyl-named": "^1.1.0",

src/package.json

@@ -11,7 +11,7 @@
   },
   "license": "Apache-2.0",
   "devDependencies": {
-    "electron-connect": "~0.3.9"
+    "electron-connect": "~0.6.0"
   },
   "dependencies": {
     "auto-launch": "^4.0.1",