Null pointer bug fix

v0.4.9

Fixed a possible null pointer issue

Target sdk bump release

v0.4.8

Merge branch 'master' of github.com:diegoperini/ffmpeg-android-java

FFmpeg status fix

v0.4.7

Updated README

Backward compatibility fix

Added support for old factory method with a deprecation warning.

Proper Recovery on Kill

v0.4.5

Added resource recovery on kill

FFmpeg readiness observer

Added whenFFmpegIsReady() to wait for ffmpeg to get ready.

Kill bug fix trial

v0.4.3

Trying to fix kill bug

Interface Visibility Fix

Fixed context provider source visibility.

Gradle fix

Fixed gradle version errors.

Ditch Singleton Context

FFmpeg doesn't use a singleton Context internally. Instead it asks for it on demand via a provider interface.

Killing ffmpeg processes now hopefully works.