Add the ability to add a title to the legend (#6906)

* Add the ability to add a title to the legend

- Legend title can be specified
- Font & color options added
- Padding option added
- Positioning option added
- Legend title sample file added

Evert Timberg committed 6y ago

d04cdfc21fdb15948184bfe3a6f242a0ceec2e08

Parent: 5cca0bb

Committed by GitHub <noreply@github.com> on 1/10/2020, 11:28:51 PM