Control single and cross layer z ordering in SLD/CSS

Description

Introduce the ability to z-order elements based on an attribute, and possibly doing so cross layer, to control the order in which features are displayed so that it matches the real-world order of the same features.

See change proposal for more information.

Environment

None

Assignee

Unassigned

Reporter

Andrea Aime

Triage

None

Fix versions

Priority

Medium
Configure