RC 2 v0.87
* Changed RListen units to use hundredths of a second
* Fixed SOUND channel 0 so that only legacy 4 bit volume commands trigger
  legacy noise.
* Bug fixes

RC 1 v0.85
* Rlisten, RNoListen and RSave implemented so that RDSP's output may be saved to a WAV file.
* Reverb effect implement that implements a room and a hall algorithm.
* Improved wav file loading.

Beta 5 v0.40
* Chorus sound effect added & examples updated
* Chorus sound effect may be chained with delay effect
* rfxmix 255 0 - implemented to turn off all channels conveniently & examples updated

Beta 4 v0.31
* Sound queue implemented : Up to 365 queued sounds per channel
* Bug fix to the XOR effect - previously the XOR was with between the current channel and the effects channel rather than the last executed channel
* Bug fix PRNG is no longer reinitialised for every SOUND command call


Beta 3 v0.26
* Stereo sound support in SOUND command including 16 stereo positions
* *RPAN command with 256 stereo positions

Beta 2 v0.23
* Improved examples

Beta 1 v0.22
* Support for modulating samples via the ENVELOPE command
* Support for sample looping.
* An ASM veneer for the shared sound call.
* Crude bell override so that samples may be played for the system bell.
* A master volume control.
* Increased channels to 16.
* Various bug fixes and code prettifying. Notably to ADSR so that decay now works and that the ADSR works more correctly with different volume levels.
* SWIs based on allocated SWI range. Although these have not yet been tested.

Alpha v0.17
 * 4 waveforms
 * Wave modulation : PWN, pitch etc
 * 8 sound channels
 * 8 resonant low pass filters (1 per channel)
 * Supoort for ENVELOPE and SOUND commands
 * A digital delay effect
 * Sample playback via WAV files

