relnotes: mention removed support for mixed log graph lines
This adds release notes for 264a2cbb25d0 (graphmod: remove support for
graph lines mixing parent/grandparent styles (BC), 2018-10-16).
Differential Revision: https://phab.mercurial-scm.org/D6407
--- a/relnotes/next Fri May 17 11:03:47 2019 -0400
+++ b/relnotes/next Fri May 17 11:11:40 2019 -0700
@@ -18,6 +18,13 @@
== Backwards Compatibility Changes ==
+ * Removed (experimental) support for log graph lines mixing
+ parent/grandparent styles. Setting
+ e.g. `experimental.graphstyle.parent = !` and
+ `experimental.graphstyle.grandparent = 3.` would use `!` for the
+ first three lines of the graph and then `.`. This is no longer
+ supported.
+
== Internal API Changes ==