Update 0.13 - Toggle Screen Effects & More Optimization

Thank all of you so much for your constant feedback! It is incredibly useful as I constantly battle bugs and poorly optimized code. Hopefully this update will help even more with the immense lag some of you are experiencing. • Added an option to disable the screen effects • Fixed Necromancer's Hand & Mirror Shard persisting through runs. • The Crown now correctly adds 2 gold for each minute survived. • More optimization.