* Make outer edge continuous even if other parts are drawn intermediately.
 * Fix burn compensation for building blocks (especially fingerHolesAt)
 * Fix hexHoles* (leftoover, grow to space, ...)
 * Try out box with fully mixed fF edges and check if all corners work properly
 * finish lamp
 * Make settings nicer
  * offer a collection of different settings
 * Make bolts configurable (e.g. box2.py)
 * setup.py
 * Fix error message on parsing error in web interface