Added back byref passing argument for TopoDS
Added default constructor for BRep_Builder and TopoDS_Builder
Added a test case
provides support for building and distributing pythonocc-core with conda
Fixed Standard_Real const reference argument
Added unittest
Merge pull request #22 from tpaviot/review/tp-standard-real-wrapper-fix

standard real wrapper fix
Merge remote-tracking branch 'origin/master'

Conflicts:
	test/core_wrapper_features_unittest.py