Fixed merge fail.
Merge pull request #439 from ambiata/topic/de-derp

Fixed merge fail.
Fix SquashReducerStateSpec due to exclusive date range
Remove duplicate entities from DumpFactsSpec
Don't use -1 for IntervalReducer for 1999-12-31
Remove unused import from IntervalReducerSpec
Remove duplicate namespaces from SkewSpec
Filter out non-window virtual features in flakey SquashSpec
Update Snapshot/Chord to respect exclusive window dates
Merge pull request #440 from ambiata/topic/squash-window-exclusive-part-2

Update Snapshot/Chord to respect exclusive window dates
Better data-types.
datas
datas
datas
datas