new test sentences
add new sentence "Jack’s hair color is similar to Ben's"
improvement for rule COMPARATIVE_3
binary relation corrections
fixing rule RELATION_THAN_7
fix for _subj() relationship
binary relationship corrections
modification to rule PREP_LINKING
binary relationship modifications
binary relationship modifications
imperative sentences /r2l
but and or rules /r2l
merge 'and-rule'
binary relationship modifications
prepositional rule changes
bug fix for bug #125
Merge pull request #155 from kkasunperera/newtests

new test sentences
Merge pull request #158 from rodsol/Imperative

imperative sentences /r2l
Merge pull request #159 from rodsol/subordinating

coordinating conjunction /r2l
Partial fix for bug #166