Use scm version in setup.py.

Version 0.7. Unicode support. Python3 compatibility.

Version 0.6.1.

Version 0.6. Migrate tests to py.test. Move main module out of `src` …

…folder.

numpy added added as requirement

marking as version 0.3

version 0.2 released

all files are completely relocated

copying rights information added

alpha functionality

caching works