fixed animation reset
make empty animation impossible
Merge pull request #20 from veryrandomname/master

FRP.Helm.Animation doesn't accept empty lists anymore.
Bumped next release version because of API changes
Add EngineConfig, defaultConfig and require it to be passed to run. Allows you to set the window dimensions, resizability, fullscreen and title.
Add better font rendering with Pango, rename join/cap variants, etc.
Add oblique and light functions
Add the function fixedCollage, centers on a specific point. Closes #23