Version 3.0: introducing Zen mode

A handful more changes to add polish and shine.

• Added more words: something to look forward to on a perfect bend
• Added save settings for hi score and options
• Added visual effects: “explosion” for snap, and “motion blur” for movement
• Added zen mode that disables words and visual effects
• Improved animation speed in easy mode so words make it off screen
• Fixed new bar could sometimes use the speed of the previous bar