CameraView

Fixed a bug that would flip the front camera preview on some devices (#112)
Two new CameraOptions APIs: o.getSupportedPictureSizes() and o.getSupportedPictureAspectRatios() (#101)
Most controls (video quality, hdr, grid, session type, audio, white balance, flash, facing) now inherit from a base Control class (#105). This let us add new APIs:
- CameraView.set(Control): sets the control to the given value, e.g. set(Flash.AUTO)
- CameraOptions.supports(Control): returns true if the control is supported
- CameraOptions.getSupportedControls(Class<? extends Control>): returns list of supported controls of a given kind

v1.4.0

CameraView is now completely thread-safe. All actions are asynchronous. (#97) This has some breaking drawbacks. Specifically, the get methods (e.g., getWhiteBalance) might not return the correct value while it is being changed. So don't trust them right after you have changed the value. Instead, always check the CameraOptions to see if the value you want is supported.
Added error handling (#97) in CameraListener.onCameraError(CameraException). At the moment, all exceptions there are unrecoverable. When the method is called, the camera is showing a black preview. This is a good moment to show an error dialog to the user. You can also try to start() again but that is not guaranteed to work.
Long requested ability to set the picture output size (#99). Can be done through CameraView.setPictureSize() or through new XML attributes starting with cameraPictureSize. Please refer to docs about it.
Deprecated toggleFacing. It was unreliable and will be removed.
Deprecated getCaptureSize. Use getPictureSize instead.
Fixed bugs.

Ability to inject frame processors to do your own visual tasks (barcodes, facial recognition etc.) (#82)
Ability to inject external loggers (e.g. Crashlytics) to listen for internal logging events (#80)
Improved CameraUtils.decodeBitmap, you can now pass maxWidth and maxHeight to avoid OOM (#83)
Updated dependencies thanks to @v-gar (#73)