implemented callbacks
created unitTest for PLN PatternMatcher
moved method implementation to source
removed random text from method doc
changed node_match implementation
changed link_match implementation
changed get_incoming_set defn and removed redundant header inclusions
added copyright
whitespace correction
fix
created test for AF filtering
modified test case
added copyright
clearing
resolved conflict
added definite check for definite-rule result
added special case for definite words
Use the boosting scorer in most problems, by default
create both partial and fully abstracted version
Merge pull request #895 from sebastianruder/context

Context rules in PLN Unit test Vol. 2