add a startLoopBlock, A block to be called when in loop playback the loop restarts/begins again
Addressed an iOS 7-related crash
Remove setting the playhead in startLoop Block

Remove setting the playhead in the main-thread notification method, cause it doubles with Line 160 and may create a jitter & click on loop boundary.
Merge pull request #55 from ploenne/master

Add a startLoopBlock on Class AEAudioFilePlayer
Minor tweaks to prior commit
Added workaround for iOS 7 audio session interruption bug
Added missing static keyword for consts
Workaround for buggy audio hardware latency reporting on iOS 7
Updated AEPlaythroughChannel to provide support for ABInputPort's new muteLiveAudioInputWhenConnectedToSelf
Addressed some trivial Xcode 5 compiler warnings
Avoid infinite recovery loop with unrecoverable system errors
_hasSystemError should stay false when we actually recovered from error
Merge pull request #57 from lijon/recovery_fix

_hasSystemError should stay false when we actually recovered from error
AEAudioUnitChannel/Filter: Add an initializer with a preInitializeBlock argument

Some audio units properties need to be set before the unit is initialized, this
can now be done in the block passed as preInitializeBlock.
AEAudioUnitFilter: add missing observer for AEAudioControllerDidRecreateGraphNotification
Merge pull request #58 from lijon/auchannelfilter_initblock

Added "preInitializeBlock" initializer for audio unit channel/filter
Corrected order of filter invocation
Moved apparatus to set ABInputPort's muteLiveAudioWhenConnectedToSelf into main class, out of AEPlaythroughChannel
Fixed a black hole state problem in AEBlockScheduler

Many thanks to AndreasHerbig for diagnosis and solution.
Fixed a podspec issue

Closes #64