Volna 0.5

This is an early alpha release for volna so there are some rough edges. It adds a simple looper operated via the rec and play buttons as well as the possibility to adjust the octave factor (usually the octave is interpreted as a factor of 2 but you can set it between 1.5 and 2.5 in this release). By setting it just a bit above or below 2,0 you can get subtle detuning effects. If you are brave enough to try this, I would appreciate your feedback here on github. So don't hesitate to open up an issue. However I cannot promise a prompt response, because this is a hobby of mine, released as open source software, and is provided as is without any warranty of any kind. So If this release does something bad to your phone or tablet don't blame me. Proceed at your own risk.