small change to aid in NLG tasks
SIG in links fix
improve handling of criteriums with same name
remove unnecessary import
improve variable handling
Enable passing of linkgrammer linkages in r2l
documentation
Merge pull request #97 from AmeBel/SuReal

changes for surface realization(SuReal)
Merge pull request #84 from williampma/SIG_fix

SIG in links fix
Merge pull request #94 from williampma/rule_engine_improvement

Rule engine improvement
Merge pull request #95 from williampma/variable_improvement

improve variable handling
"I run more than Ben." This sentence produces two parse trees that have exactly the same cost. 
i.e. (run, more) connected through Omm AND MVm. 
So one can argue it forms a _obj(run, more) relationship
adding _advmod() relationship
adding _advmod() relationship
adding _advmod() relationship
added missing priority
priority was never used since version 1
ThatRule proprocessing proposal
better ignore behavior
adding _advmod() relationship