Merge pull request #1 from ruslanskorb/develop

Version bump (0.2.0)
Merge pull request #5 from ruslanskorb/develop

Version bump (0.3.0)
Merge pull request #9 from ruslanskorb/develop

Version bump (0.3.1)
Merge pull request #14 from ruslanskorb/develop

Version bump (0.4.0)
Merge pull request #17 from jjochen/feature/expose_ui_elements

Make UI elements public for better customization.