Switch gtmfe to Makefile
Drop iB4e source from repo
Merge parametrizer_types into gtmfe source tree
Update Makefile to use OpenMP from Sage
Add BBpolytope helper file
Update parametrizer.py to use new algorithm implementation
Update README with simplified build process
Add global Makefile and update README
Clean up gtmfe Makefile
Run GTrunner in Sage env for binary compabitility
Update initialization procedure in BBpolytope
Update outernormal algorithm
Add combinatorial test sequence
Mention Sage GCC in README
Correct bad assumption about ordering in NormalFan()