Submod Updater Plugin v1.5 - Beta submods

Changes:

• You can no longer downgrade submods. It was decided that it'll be more convenient and safe.
• If you installed a submod that hasn't been released yet, it'll be marked as "beta" submod.
• If you're updating this submod in the game as you should, then you've already noticed that it now supports md tags for text formatting. For example, I can provide a link to my readme.

Bugfixes:

• Fixed the issue when renpy returned the wrong filepaths to the files.
• Removed redundant compiled versions of py scripts, which means less download size.
• Optimized submod menu.