General improvements

Some improvements have been made to the game. Here is the full changelog:

• You can now double-click on exploration areas to immediately access them. For example double-clicking a door will advance you through it without a prompt. This makes for a faster and less tedious exploration
  
• The fast-forward button now skips dialog automatically, so it's actually practical now
  
• Dialog speed is slightly increased. Doesn't make a big difference but it's better this way
  
• you can earn money in the casino by pressing the + key on your keyboard. This is not the intended way to play the game, however I saw complaints from some players who just couldn't pass those mini-games
• Added a windowed mode toggle by pressing the F11 key. If your window suffers from blurry pixels this may be relevant to you. Windowed mode displays sharp pixels in a 1280x720 window. Good for recording GIFs and screenshots
  
• Made Dragon's dreaded piano puzzle easier by reducing the number of piano keys considerably
  
• Added music volume increase/decrease using F9/F10 keys
  
• Reduced mouse lag caused by the frame rate cap
  
• Fixed some typos
  
• Added a Tips screen in the main menu with some general info that new players may not know about (mainly keyboard shortcuts)