Fix filter resetting to ensure GPUImageTwoInputFilter is in good state
Ported convolution filters to the Mac and added a Laplacian filter.
Added a three-input filter type, fixed scaling issues with the Lanczos resampling, and started adding multiple AV camera support to the Mac.
Ported a few more filters to the Mac. Added the ability to lock on to a specific UUID for a Mac camera.
Ported some more filters to the Mac, including some effect and the remaining edge detectors.
Fixing Indentation of Filter List & Parameters
Merge pull request #960 from NSHipster/master

Fixing Indentation of Filters & Parameters in README
Fixed issue #765

- Added 'cancelProcessing' method to GPUImageMovie to cancel an on-going video file processing.
- Added a check to cancelled status to 'finishRecordingWithCompletionHandler:' in GPUImageMovieWriter to detect if the writing was cancelled.
Fixed a compilation error with older Xcodes.
Fix GPUImageRawDataOutput so that if the current frame has been read previously, the cached version is returned rather than reading the pixel buffer/texture cache each time
Fixed vignette filter to take into account alpha in the original image, improved its performance.
Merge pull request #935 from aburgel/better_twoinput_fix

Fix filter resetting to ensure GPUImageTwoInputFilter is in good state
Merge pull request #970 from stevegraham/raw-data-output-fix

Use GPUImageRawDataOutput cached bytes
Merge pull request #964 from jvaldera/master

Fixed issue #765
Ported the corner and line detectors to the Mac. Fixed a glitch in the line detector.
Added alpha support to the RGB and polka dot filters.
Ported the buffer-based filters to the Mac, although I need to fix the motion detector display.
Ported the remaining filters to the Mac. Dramatically improved quality of the Gaussian blur by fixing an idiotic swap of texel offsets that I had in there for most of a year.
Merge remote-tracking branch 'upstream/master'
Fixing build error when using iOS deploy target of 6.0 or greater.