introduce Theme class. this allows easy creation of UI themes
adjust parent of the project
complete overhaul of UI theme
Merge pull request #1 from matthesrieke/feature-assembly

pseudo module for release bundle creation
support for file-system based themes
reset to default font after initialization
visualize dart hits!!
update "plain" theme images
fix PolarCoordinateTest with regards to improved board layout
Merge pull request #11 from matthesrieke/feature-themes

Include theme concept