SPP 0.5.0.0

Added support for some lower sample rates, stereo/mono, and the ability choose the buffer size on the client-side.

Play store link: https://play.google.com/store/apps/details?id=com.kaytat.simpleprotocolplayer&hl=en

Github link for the client: https://github.com/kaytat/SimpleProtocolPlayer

Github link for the Windows server:  https://github.com/kaytat/SimpleProtocolServer