Merge branch 'release/1.0'
Merge branch 'release/v1.0.1'
Merge branch 'release/1.0.2'
Merge correct maven release
Merge 1.0.3 release
Merge commit '9986741'
Merge commit '64e071f'
Update to newest build tools version
Add methods for controlling rotation
Add utility functions to Rotation
Add Sobel edge detection with threshold clipping.
Merge branch 'master' of github.com:dichro/android-gpuimage
Remove cloned copyright header.
Fixed deadlock in getBitmapWithFilterApplied

There is a deadlock that occurs in getBitmapWithFilterApplied, on older devices.  The call to requestRender(), and the runnable that calls mFilter.notify() completes, before the calling thread can reach the mFilter.wait() on line 274.  Because mFilter.notify() has been called already, the call to wait() never completes.

This change means the synchronised block starting on line 265 will not run until the calling thread gives up the synchronized lock by calling mFilter.wait() on line 274.
Merge pull request #64 from lukesleeman/patch-1

Fixed deadlock in getBitmapWithFilterApplied
Update build.gradle

fix windows system buildNative error
Fixed heavy cpu usage in getBitmapWithFilterApplied
Merge pull request #72 from amachang/develop

Fixed heavy cpu usage in getBitmapWithFilterApplied
Merge pull request #68 from youxiachai/patch-1

Update build.gradle
Merge pull request #59 from dichro/develop

Sobel edge detection with threshold clipping