Fix PluginOperationTest
Bump version to 0.2.0-alpha; Breaking versions increase minor version now instead of patch version
Bumping PKGBUILD
Harmonize plugin API calls (OS description), fixes #253, fixes #264
Merge branch 'develop' of github.com:syncany/syncany into develop
Update changelog
Re-fix #255 / #254; broken after moving around gradle stuff; making sure it doesn't happen again
Merge branch 'develop' of https://github.com/syncany/syncany into feature/issue192
Cherry picked javadoc from 6dcb637