Version 32: Updated Tests and Testing Badge

• Updated Tests badge on README such that clicking on it will rerun the Tests and cache the results properly.
• Cleaned up Tests.ts.
• Silenced npm errors when running "lint" and "fix" scripts.
• Updated dependent packages.

Updates to the Tests file requires a new version for Live Tests to be runnable.

Usage

To utilize the new version:

1. Edit your Google Apps Script
2. Open Resources > Libraries... from the menu.
3. Change the version dropdown to 32 next to FirestoreApp.