add submodule init/update to makefile
remove unused imports
add rm *.pyc to clean target
add capture logger
fix unit tests
change prop to util.prop + major logging overhaul
update numeric
reintroduce verbosity, add CaptureLog to unittests
make _get_intersections return array i/o generator
change Immutable imp from __new__ to __metaclass__
generalize simplex edges
change pct calculation, add missing range arguments
fix conv test
add delaunay 1d support, change edge order for line
implement trimmed boundaries
flip trim boundary for negative group