mostly cleanups

tesselation result is now independent of the order of the specified parameters,
so we do not need to calculate it twice
new module for specialized CSV parsing and typechecking
fix description
rename "dist_tools" module to "volpy"
add docstring
use "csvtools" module
use "volpy" module
start using pretty printer
move build_tuple_seq() to volpy module
move TODO accordingly
add TODO
add test script + results
add results for "small" filaments
add results for "detailed" filaments