0.2.21

Just in time for Christmas comes a culmination of many months of improvements!

• Updated to Python 3.9
• Updated to PyInstaller 4.1
• User config now automatically creates new sections
• CI user config now configs the environment variable names to find values under, thereby unifying configuration for user and CI for various systems, and improving portability
• Upgraded from hub to GH CLI for release downloads/uploads
• Added integration for Git Credential Manager Core, with update checking and credential helper integration to automatically fill in credentials for release downloads
• Updated many log messages
• Improved version output
• Fixed MD5 checksum failure error not printing correctly
• Error states now output the status automatically, to reduce a step in support tickets when sharing the log
• Upgraded to use git maintenance for gc, loose objects and repacking
• Fixed commit graph being updated when it could not be
• Added LFS prune as a default command again due to fixes in 2.13
• Added system for unshallowing repo and undo single branch setups, for new super charged clone setup
• Optimized pulls with LFS by pulling in one batch rather than creating new LFS processes (slow on Windows)
• Added support for user selected versions
• Improved engine directory selection in many cases
• GSURI now automatically uses the one configured in .ue4versionator
• Improved gsutil cp parameters
• CI now manages a user config file of its own for better storage for ue4versionator
• New engine downloads will automatically install prerequisites, register unreal version selector, and for developers, generate project files
• Added automatic management of source control and text diff path settings for UE4
• Added handling of trivial rebases, in the various cases they get stuck randomly
• Optimized core sync process
• Improved project portability
• CI automatically cleans old versions
• Added partial sync mode
• Added migrate command