tried with WriterT, undid most of it; compiles
moved GLMapState: _renderedMapTexture to State: _mapTexture
camera is recalculated on mouse action instead of at every frame
upper bound of 0.001s for frame diff time (Main.hs), added second viewport widget to GUI (currently just an empty shell)
ui: generalized viewport to access camera object via lens
changed to wireframe-rendering
Merge remote-tracking branch 'origin/ui' into iqm
tried lot of stuff.. nothing worked.
added triangles to IQM-Parsing

- Models should now use the right "drawElements"-Method
- still no sign of our box-model