Upgrade dependencies

It's mostly modules which have dropped support for Node < 4.

`devDependencies`

* [`asar`](https://github.com/electron/asar/blob/master/CHANGELOG.md#0140---2017-11-02)
* `coveralls` (drop Node < 4)
* [`mocha`](https://github.com/mochajs/mocha/releases/tag/v4.0.0)
* [`sinon`](http://sinonjs.org/guides/migrating-to-4.0)

`dependencies`

* [Electron Packager](https://github.com/electron-userland/electron-packager/releases/tag/v10.0.0)
* [`github`](https://github.com/octokit/node-github/releases/tag/v12.0.0)
* [`inquirer`](https://github.com/SBoudrias/Inquirer.js/releases/tag/v4.0.0)
* [`sudo-prompt`](https://github.com/jorangreef/sudo-prompt/compare/v7.1.1...v8.0.0)

`optionalDependencies`

* [`electron-installer-debian`](https://github.com/unindented/electron-installer-debian/blob/master/NEWS.md#070---2017-11-09)

package.json

@@ -34,7 +34,7 @@
   "author": "Samuel Attard",
   "license": "MIT",
   "devDependencies": {
-    "asar": "^0.13.0",
+    "asar": "^0.14.0",
     "babel-eslint": "^7.0.0",
     "babel-plugin-istanbul": "^4.0.0",
     "babel-plugin-syntax-async-functions": "^6.13.0",
@@ -44,7 +44,7 @@
     "chai": "^4.0.0",
     "chai-as-promised": "^7.0.0",
     "commitizen": "^2.8.6",
-    "coveralls": "^2.11.15",
+    "coveralls": "^3.0.0",
     "cross-env": "^5.0.0",
     "cz-customizable": "^5.0.0",
     "esdoc": "^1.0.1",
@@ -58,11 +58,11 @@
     "generate-changelog": "^1.0.2",
     "gulp": "^3.9.1",
     "gulp-babel": "^6.1.2",
-    "mocha": "^3.2.0",
+    "mocha": "^4.0.1",
     "nodemon": "^1.11.0",
     "nyc": "^11.0.0",
     "proxyquire": "^1.7.10",
-    "sinon": "^3.0.0"
+    "sinon": "^4.1.2"
   },
   "babel": {
     "sourceMaps": "inline",
@@ -117,13 +117,13 @@
     "electron-forge-template-react": "^1.0.2",
     "electron-forge-template-react-typescript": "^1.0.3",
     "electron-forge-template-vue": "^1.0.2",
-    "electron-packager": "^9.1.0",
+    "electron-packager": "^10.1.0",
     "electron-rebuild": "^1.6.0",
     "form-data": "^2.1.4",
     "fs-extra": "^4.0.0",
-    "github": "^11.0.0",
+    "github": "^12.0.3",
     "glob": "^7.1.1",
-    "inquirer": "^3.0.1",
+    "inquirer": "^4.0.0",
     "lodash.template": "^4.4.0",
     "log-symbols": "^2.0.0",
     "node-fetch": "^1.6.3",
@@ -136,7 +136,7 @@
     "resolve-package": "^1.0.1",
     "s3": "^4.4.0",
     "semver": "^5.3.0",
-    "sudo-prompt": "^7.0.0",
+    "sudo-prompt": "^8.0.0",
     "tabtab": "^2.2.1",
     "username": "^3.0.0",
     "yarn-or-npm": "^2.0.2",
@@ -151,7 +151,7 @@
     }
   },
   "optionalDependencies": {
-    "electron-installer-debian": "^0.5.0",
+    "electron-installer-debian": "^0.7.1",
     "electron-installer-dmg": "^0.2.0",
     "electron-installer-flatpak": "^0.6.0",
     "electron-installer-redhat": "^0.5.0",