Merge remote-tracking branch 'upstream/master' into spark-dialog-4-styling
Merge remote-tracking branch 'origin/spark-dialog-3' into spark-dialog-4-styling
Padding, border, etc.
Position and size dialogs externally from spark-polymer-ui rather than internally
Add one more justify-content mode to spark-toolbar
Increase default horizontal padding for slenderer buttons
Add [spacing] attribute to spark-toolbar
Numerous styling improvements in spark-dialog's shadow DOM
Tweak buttons and closing X in spark-dialog
Merge remote-tracking branch 'origin/spark-dialog-3' into spark-dialog-4-styling

Conflicts:
	widgets/lib/spark_dialog/spark_dialog.html
Merge remote-tracking branch 'upstream/master' into spark-dialog-4-styling
Merge pull request #2192 from ussuri/spark-dialog-4-styling

Styling <spark-dialog>