Version 0.5.21 - Hotfix

Hey everyone!
Here's a small hotfix to fix a few errors:

• Prevented a crash on failure to save or load the game.
  
• Some minor localization fixes
  
• Fixed an issue that caused the selected Language to not be saved when closing the game
  
• Fixed an issue with the Enduring Sentry's projectile that caused no knockback to occur
  
• Small balance changes to certain enemies