Use DMAChannel.h, to share DMA channel allocation with other libraries
Add SpectrumAnalyzer example
Add Fire example
Add Adalight example
Add PixelInvaders example
Add Artnet example (from Atnet library)
Add VideoSDcard example
Add hardware image and info for VideoSDcard
Add movie2sdcard Processing program
Fix numerical overflow issue in movie2sdcard.pde
Add addaudio.c to VideoSDcard example
add library.json