Addressed some outstanding problems with some audio formats
Only perform AELimiter asserts in debug mode
Fixed an issue with input level monitoring with Audiobus
Support for other sample rates in AELimiter
Removed some problematic and unnecessary code from float converter
Added Audiobus support to AEPlaythroughChannel
Tweaked tolerances for AEMixerBuffer
Minor tweak for compatibility with older Xcode versions
Fetch achieved hardware sample rate after the audio session is activated

As per https://developer.apple.com/library/ios/#qa/qa1631/_index.html
Merge pull request #9 from rklaver/sample-rate-fix

Fetch achieved hardware sample rate after the audio session is activated
Added getters for AUNode of audio unit channel/filter
Added allowMixingWithOtherApps property (default YES)
Fixed issue with incorrect hardware sample rate handling
Workaround for graph bug

See http://wiki.theamazingaudioengine.com/graph-node-input-callback-bug
Adjusted playthrough channel's max allowed latency down to zero
Converted some errant tabs to spaces
Documentation fix and minor code cleanup
small fix to filtering section in guide
Merge pull request #19 from willpragnell/master

Small fix to filtering section in guide
Documentation fix