Audiobus SDK 2.0 changes
Additional Audiobus 2.0 tweak
Fixed an Audiobus feedback issue with AEPlaythroughChannel
Addressed a couple of minor compiler warnings
Removed a couple of unused constants
Addressed a mixer buffer issue when timestamp is missing
Tweaked float converter cleanup
Removed an Audiobus function that doesn't exist any more in 2.0
Updated muting behaviour for AB2
Updated AEPlaythroughChannel for AB2 (no more 'muteLiveAudioWhenConnectedToSelf')
Use constant for max frames per slice
Addressed a monitoring signal flow issue
Merge branch 'refs/heads/master' into audiobus2

Conflicts:
	TheAmazingAudioEngine/AEAudioController.m
Minor optimisation to ignore identical client format change in AEMixerBuffer's setter
Fixed an issue with AB2 SDK stub
Updated Audiobus2 stubs for ABSenderPortSendAudio => ABSenderPortSend and ABSenderPortGetIsMuted => ABSenderPortIsMuted symbol renames.
Use new TPCircularBufferPrepareEmptyAudioBufferListWithAudioFormat function in AEMixerBuffer
Added an 'inTimeStamp' parameter to AEMixerBufferSource
Added some asserts to AEMixerBuffer to ensure timestamp validity
Altered AEMixerBuffer to allow empty timestamps