* add test case
* add coplanarity test
* another failing test
* use orient3d
* no printing
* reverting... That introduced lots of other failure cases
* subdivided knight case
* wip predicates
* promising predicates version
* tri_tri_overlap compiles, header guards, predicate find_*
* tests for predicates::find_in...
* parallel for
* note
* mv to predicates
* remove old functions
* tutorials; extracting segments is broken 904
* fix extraction bug
* missing header
* capture consts