Progress Bar and Tab History Tracking

• Implemented a progress bar to track batch-changing tracks and removed the spinner
• Added SxEx to the output text of batch-changing tracks to better identify episodes that have changed
• Added tab history tracking so you can use the back and forward browser buttons to navigate through the tabs you've been using

Added PIN based Authentication

Added PIN based authentication for the site. The old URL / Token method is still available via a toggle switch.

Initial Release

The first official release of PASTA. Also includes the Dockerfile.