feat: bump minimum node version to 16 and add tests (#86)

BREAKING CHANGE: Minimum node version is now 16

src/index.ts

@@ -1,8 +1,7 @@
 import { spawn } from '@malept/cross-spawn-promise';
 import * as asar from '@electron/asar';
-import * as crypto from 'crypto';
 import * as fs from 'fs-extra';
-import minimatch from 'minimatch';
+import { minimatch } from 'minimatch';
 import * as os from 'os';
 import * as path from 'path';
 import * as plist from 'plist';
@@ -31,7 +30,7 @@ export type MakeUniversalOpts = {
   /**
    * Forcefully overwrite any existing files that are in the way of generating the universal application
    */
-  force: boolean;
+  force?: boolean;
   /**
    * Merge x64 and arm64 ASARs into one.
    */