ToNetwork adds edge attributes
Merge remote-tracking branch 'upstream/master' into upstream
Class GroupStmt for groupings caching
Optimization of TTable::Aggregate
Refactored and Parallelized TTable::ColGenericOp
increment value counter on AddKey
Fixed bugs in parallel TTable::Aggregate; Added parallel version for UpdateFltFromTable
fixed bugs in TTable::UpdateFltFromTableMP
changed default value of UsePhysicalIds in TTable::GroupByIntColMP
Added test for implementation of PageRank using table operations
Added test for GroupByIntColMP
Fix GroupByIntColMP to use integers rather than strings in GetIntAttr.
Merge pull request #1 from sramas15/upstream

ToNetwork now correctly adds edge attributes.
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' of https://github.com/sramas15/snapr