system-independent implementation of SeedRandom
Merge remote-tracking branch 'origin/master'
add application/json to mimetypes.xml
register application/json with mimetypes module
remove some occurrences of Sage in the documentation TeX file, some other minor changes
update manual for setuptools
basic unittesting
run unittests with setup.py test
add parser unittests
add simple console unittests
replace unittest with unittest2
only import unittest2 for python2.6
add setup.py test command
sympy.Real -> sympy.Float
fix setup.py import mathics circular dependency