created tet directory with start of test functions. also fixed small bugs and finished the help function

Tried to fully package the core api but that seems like a very difficult endeavour, as passing the shared library via package_data is not enough. it complains about missing symbols, meaning that the other shared/linked stuff is not working anymore. it only works good if things are now loaded by adding this package to the PYTHONPATH atm. will do it later with pip, but thats gonna be some more work

restructured the directories containing function. need to put binarycpython.api which will contain the binarycapi

fixed functionality for fetching default args via binaryc interface. making some evolution plots now