Bump version to 0.9.1 (#165)

This release includes the following changes:

- Make pygfx renderer more resilient (#159)
- Fix anchoring issue (#161)
- Add vbox and hbox layouts and allow for setting direction to horizontal and vertical (#163)
- Add a flag that indicates whether the collagraph instance is currently reloading (#164)

Author: berendkleinhaneveld

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "collagraph"
-version = "0.9.0"
+version = "0.9.1"
 description = "Reactive user interfaces"
 authors = [
     { name = "Berend Klein Haneveld", email = "berendkleinhaneveld@gmail.com" },