TODO: next version

[BrunoRNS]

• Generate more different types of waves
• Generate waves in different frequencies (900Hz, 1000Hz, 1100Hz, ...) for better quality
• Generate UInt16 waves for full compression in spc700, UInt16 9/32 instead of UInt8's 9/16
• Fix pitch in waves (some of them are in different pitch that isn't the correct one for the note)
• Generate different chords with the notes
• Make waves for some types of instruments such as guitar and piano.

Contributors are welcome! All PR's must be sent in the develop branch.