v0.1.6, 15-Oct-2013 -- Initial release
v0.1.7, 15-Oct-2013 -- Update documentation
v0.1.8, 15-Oct-2013 -- Update documentation
v0.1.9, 16-Oct-2013 -- Modify wxpython
v0.1.10, 16-Oct-2013 -- Eliminate wxpython
v0.1.11, 20-Oct-2013 -- Overhaules quat_funcs
v0.1.12, 23-Oct-2013 -- renamed "quat_funcs" to "quat"
v0.2.0, 27-Oct-2013 -- documentation and testing much improved
v0.2.1, 28-Oct-2013 -- reset current dir in __init__.py
v0.2.2, 28-Oct-2013 -- indentation mistake in fitLine corrected
v0.2.3, 29-Oct-2013 -- changed from wxPython to PyQt4
v0.3.1, 29-Oct-2013 -- changed directory structure, added docu
