Update package versions

Leave Electron on 1.7.9 because 1.8.2 crashes: electron/electron#10651.

package.json

@@ -64,29 +64,31 @@
   },
   "devDependencies": {
     "babel-core": "^6.25.0",
+    "babel-eslint": "^7.2.3",
     "babel-loader": "^7.1.1",
+    "babel-plugin-istanbul": "^4.1.1",
     "babel-plugin-transform-runtime": "^6.23.0",
     "babel-preset-env": "^1.6.0",
     "babel-preset-stage-0": "^6.24.1",
     "babel-register": "^6.24.1",
     "babili-webpack-plugin": "^0.1.2",
     "cfonts": "^1.1.3",
+    "chai": "^4.0.0",
     "chalk": "^2.1.0",
     "copy-webpack-plugin": "^4.0.1",
     "cross-env": "^5.0.5",
     "css-loader": "^0.28.4",
     "del": "^3.0.0",
     "devtron": "^1.4.0",
-    "electron": "^1.7.5",
+    "electron": "^1.7.9",
+    "electron-builder": "^19.46.5",
     "electron-debug": "^1.4.0",
     "electron-devtools-installer": "^2.2.0",
-    "electron-builder": "^19.19.1",
-    "babel-eslint": "^7.2.3",
     "eslint": "^4.4.1",
+    "eslint-config-standard": "^10.2.1",
     "eslint-friendly-formatter": "^3.0.0",
     "eslint-loader": "^1.9.0",
     "eslint-plugin-html": "^3.1.1",
-    "eslint-config-standard": "^10.2.1",
     "eslint-plugin-import": "^2.7.0",
     "eslint-plugin-node": "^5.1.1",
     "eslint-plugin-promise": "^3.5.0",
@@ -103,14 +105,11 @@
     "karma-sourcemap-loader": "^0.3.7",
     "karma-spec-reporter": "^0.0.31",
     "karma-webpack": "^2.0.1",
-    "webpack-merge": "^4.1.0",
-    "require-dir": "^0.3.0",
-    "spectron": "^3.7.1",
-    "babel-plugin-istanbul": "^4.1.1",
-    "chai": "^4.0.0",
     "mocha": "^3.0.2",
     "multispinner": "^0.2.1",
     "node-loader": "^0.6.0",
+    "require-dir": "^0.3.0",
+    "spectron": "^3.7.1",
     "style-loader": "^0.18.2",
     "url-loader": "^0.5.9",
     "vue-html-loader": "^1.2.4",
@@ -119,6 +118,7 @@
     "vue-template-compiler": "^2.4.2",
     "webpack": "^3.5.2",
     "webpack-dev-server": "^2.7.1",
-    "webpack-hot-middleware": "^2.18.2"
+    "webpack-hot-middleware": "^2.18.2",
+    "webpack-merge": "^4.1.0"
   }
 }