Alex b43943a9b0 [FEATURE] New expression variables for legend items
Adds new variables for use in data defined expressions for layout legend items, including

- @legend_title
- @legend_column_count
- @legend_split_layers
- @legend_wrap_string
- @legend_filter_by_map
- @legend_filter_out_atlas

Additionally, if the legend is linked to a map, then expressions used in that legend will also have access to the linked variables, including @map_scale, @map_extent, etc.
2019-01-18 13:38:21 +11:00
..
2019-01-14 12:32:36 +01:00