v0.1.1 - Bug fixes and UX improvements

Fixed issues found in 0.1.0 and implemented some features playtesters asked for.

Changelog

• Made difficulty affect enemy attack speed
• Added fade effect when moving between floors
• Game difficulty is now shown when playing and on win/death screens
• Add animation when receiving ward
• Improved sound effects
• Removed "disable post-processing" option: it was causing a game-breaking bug in the browser