python 3 tox test running
tiny progress for nltk importing
Syntax is fixed to be 2.6-3.2 compatible for several modules
more compatibility (featstruct, grammar, lazyimport, nltk.stem)
first take on sourccedstring & text
more simple fixes
python2 compat for toolbox
a couple of test failures are fixed
drop python 2.5 support
ignore nose temp file
Exception handling syntax compatible with python 2 and python 3.
exec is fixed
Idioms:

type(foo)== -> isinstance,
while 1 -> while True
.sort -> .sorted
python 3 compatible imports
workaround missing im_class in python 3
reduce is not a builtin in python 3
Backticks are not supported in python 3
tuple arguments are not supported in python 3
simplify an expression
range vs xrange