Different Drummer 3.3.2 brings fixes and stuff

Here's what's new in Different Drummer:

• Fixed crash bug in sound preview
• Fixed glitching on Saw Waves and elsewhere
• Fixed bug that could crash when randomizing
• Fixed bug that cause display lagging when returning to app
• More reliable sync of rhythm display with what's playing
• Changed Wave Selectors to toggle when same wave selected
• Added Solo button where toggle switch used to be
• Progression button lights up when progression active
• Made color coding in Wave area a little more prominent