Bump version to 0.16.2

Bump version to 0.16.1

FilterGraph: keep reference of the filters input frame

Real fix after c194f63

Merge pull request #324 from avTranscoder/fix/video_filters

Fix video filters

Merge pull request #323 from avTranscoder/fix/filters_memory_leak

Fix filter memory leak

Bump version to 0.15.3

Bump version to 0.15.2

Bump version to 0.15.1

Bump version to 0.15.0