fixed searn bug, added python search interface
re-fixed snapshot bug, changed type of structured_predict to remove copying
lots more comments for python interface
minor improvements to python interface
merged john
adding python_hook search task, other minor fixes
added pythontask hook file (previously forgot commit)
fixed --help for search
bug in pyvwsearn
removed some weird formatting (tabs, etc.) and replaced with spaces
merged
Merge pull request #383 from hal3/master

cleaned up python interface, now there's a searn python interface too