Merge pull request OpenShot#90 from OpenShot/release-20200229

Release branch for libopenshot-audio 0.2.0 (SO 7)

Merge pull request OpenShot#80 from OpenShot/release-20200105

WIP: Release of libopenshot-audio 0.1.9 (SO 7)

Merge pull request OpenShot#35 from OpenShot/release-20190320

Merge release branch into master

Merge pull request OpenShot#24 from OpenShot/release

Releasing version to 0.1.7 (SO: 6)

Merge pull request OpenShot#18 from OpenShot/feature/merge-develop-ba…

…ck-to-release

Updating release branch from develop

Bumping version to 0.1.4 (so 5)

Bumping version to 0.1.4 (so 5)

Bumping version of libopenshot-audio to 0.1.3 (so 4)

Bumping version to 0.1.2, so 3.

Bumped version to 0.1.1-3, released (matching version of libopenshot)