Add Edge support and other minor updates

* Add Edge support
* Update password and cookie data structures to support multiple database sources
* Add new directories for Cookies file
* Add support for multiple Cookies and Login Data files given a base directory
* Add support for multiple base directories
* Fix crash caused by some SQLite 3 DB' encrypted_values BLOB field would be interpreted as a str in Python
* Write better docstrings
* Use CC0-1.0 License
* Crash if attempted to run on a platform other than Microsoft Windows