New features

• Version control - the program will notify you on startup if there's a new version available
• Improved logging - add debug: True to config.yaml to save logs into a file (be careful, the file can get big quickly)
• Improved UI - the list of leagues is color-coded based on the current drop availability from Riot
  • Orange - Riot has turned off the drops for this match
  • Green - Drops are possible