• Added Document.path property to get the local path of a document from the database. Thanks @juliusn for this! #99
• Updated Tests to check for the above and fix tests that couldn't fail!
• Updated README with a section that denotes all the Document properties.
• Updated dependent packages.

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 33 next to FirestoreApp (or whatever name you use locally).