Version 0.5

- The offline example is changed to show how to use time stretching.
- SuperpoweredRecorder extended with simple WAV writer functions.
- Bugfixes in pitch shifting and mono mixer.
Merge branch 'master' of github.com:superpoweredSDK/Superpowered-Audio-SDK into os-x

Conflicts:
	Superpowered/SuperpoweredAudioOutput.mm