Fasttracker II clone v1.74 with BRR Support

• Updated to v1.74 of origin branch
• Improved BRR sample loading
• Improved strcasestr for both cross platform compatibility and backwards compatibility with versions of SDL2 before 2.26
• Added mouse wheel x-axis scrolling for sample waveform in sample editor

Fasttracker II clone v1.69 with BRR Support

Absolutely love 8BitBubsy's Fasttracker II clone but wanted to add sample loading for Super Nintendo .brr instrument samples.

BRR sample loading could still use some auto sample rate/pitch detection but for now loads at the default RAW sample rate of 8363hz