Bump version to 0.8.11 (#150)

Includes:

* Fix for removing items from 'form' layout (#149)
* Bump minimum version of pygfx to 0.13 (#145)

Author: berendkleinhaneveld

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "collagraph"
-version = "0.8.10"
+version = "0.8.11"
 description = "Reactive user interfaces"
 authors = [
     { name = "Berend Klein Haneveld", email = "berendkleinhaneveld@gmail.com" },