Patched PyEuclid to deal with shortcomings in the released version.  TODO: remove this patch when Euclid gets updated
Added dependency on PyEuclid now that it's on PyPI
moved examples from previous loc
test_utils.py: removed TODO about PyEuclid dependency, since it's now installed automatically
moved pyeuclid_examples files to main examples directory now that euclid dependency isn't risky
removed pyeuclid_examples
--solidpython.py: made include_orig_code True by default, so all generated SCAD code will include the python used to create it.
-- made koch.py & screw_thread_example.py conform to other example patterns
Updated TODO