Adding sqrt to header, fixes issue with sympy codegen.
Adding simple strong form language base
Organizing language file
Adding poisson demo
Fixing poisson.  Adding linear advection diffusion reaction.
Adding issues for advection demos to run.
Adding some proteus running utilties
Adding printers, getting for proteus poisson version workin.
Don't generate problem, rather only coefficients.
Updating code printer for coefficients in proteus.  Adding new code abstraction.
Remove languages from default import to stop hard requirement on Mako
Adding Code DAG obj and tests.
Adding code printer test stub, cleaning up some other bits.
Adding some test for wrappers.
Adding cffi to wrapper benchmark
Small fix for consistency in makefile
Adding swig
Fixing bad symbol lookup from anaconda
Adding hand written extension
Moving swig files to have swig in name