v0.6.0

Changes compared to v0.5.0:

• Rename FakeSID class to ShitSID
• Lower latency on WASAPI out
• Mixed waveforms support
• Proper phase accumulator
• Test bit support
• Warning when BRK instruction encountered (for debugging)
• Voices can be muted
• Oscillator sync
• Ring modulation
• Improved noise pitching

Still includes the same example SIDs.