Fix dragbox onenddrag.
Fix test.
Merge pull request #1349 from palantir/dragbox_hotfix_release

[HOTFIX] Fix dragbox onenddrag.
Fix dragzoomx quicktest to not zoom in if start and end x values are the same.

Such as when there's a click without a drag.
Release version 0.37.0
Merge pull request #1351 from palantir/release-v0.37.0

Release v0.37.0 (--> develop)