Fix 915. Adjust `_setColumns` to deep clone properly and only once on recursive nodes.
Add test and update history.
Fix 915. Adjust `_setColumns` to deep clone properly and only once on recursive nodes.
Add test and update history.
Fix typos.
Remove unused vars from test. Use public method for test instead of protected.
Merge branch 'dev-3.x' of github.com:yui/yui3 into dt-915
Merge branch 'dt-915' of github.com:apipkin/yui3 into dt-915

Conflicts:
	src/datatable/HISTORY.md
	src/datatable/tests/unit/assets/datatable-core-tests.js
Fix 1052. Fires `changeUpdate` after the DataTable has been updated when triggered.
Add test and history changes.
Comment out test unsafe for CI.
Change event name from `changeUpdate` to `contentUpdate`.
Merge branch 'dev-3.x' of github.com:yui/yui3 into dev-3.x
Merge branch 'live-docs' into dev-3.x
Merge branch 'dev-master' into dev-3.x
Merge branch 'live-docs' into dev-3.x
Merge branch 'dev-master' into dev-3.x
Merge remote-tracking branch 'upstream/dev-3.x' into dev-3.x
Remove widget-locale module

The widget-locale module has been deprecated 3 years ago. So we
already providing intl module instead. Also, fix #936 by this change.
Merge branch 'dev-master' into dev-3.x