fixed import error

fixed import error

removed unnecessary warnings etc

bug fix with empty edge list interpretation.py

Merge pull request #14 from lab-v2/grounding-improvement

v2.0.0 Grounding Improvement

small bug fix and version change for new release

updated setup.py version

Merge remote-tracking branch 'origin/update-average' into update-average

fixed bug in rule trace due to deletion of applied rules and changed …

…version

changed version for new release