_barAlignmentFactor instance var set to 0.5
922 - fill starts off as right color before transition

Massive refactor of animator as well as some edge case fixing
Also a precommit for #918

Close #922.
897 - stacks on each relevant project call

Close #897
cleanup code
Add .idea to gitignore
Change directory structure to be more sensible
Update reference.ts, etc
Fix CategoryAxis behavior with non-string data. Close #927
Remove bad console statement
[minor] Address bluong's feedback for RR #943
Release version 0.27.0
Remove comments from built files.
Update D3 to the latest release
Add test for #683 (verify CategoryAxis works w/o any data)
Moving axes to their own directory
Allowing projections on vertical/horizontal and non-x/y
stackExtent is based off of primaryAccessor
Revert "Adjusting barAlignmentFactor"

This reverts commit b7a2bfd4f542555ca18813494bef29a4071fdb26.
Revert "Adding _barAlignmentFactor instance var"

This reverts commit 46786db2272bb0c3fca94e719b015be8484240e2.
Merge branch '897-stackOnProject' of github.com:palantir/plottable into 897-stackOnProject