Rename cartesian to vector
Add String.draw
Draw interaction in paintEvent
Provide base class for physical bodies
Provide base class for interactions
Add Vector.mapX
Replace show with __repr__
Start work generator of demo grid
Add translate
Add scale functionality for generator
Generate all interactions for simple grid
Create a simple grid in grid_generator
Write out prepared grid to file
Add functions for generating honeycomb grid
Add honeycomb_relations
Allow to generate honeycomb grid
Allow to generate solid-frame