Update version to v0.12.0

Author: rec

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "pullman"
-version = "0.11.0"
+version = "0.12.0"
 description = "🥞 Manage ghstack pull requests 🥞"
 authors = [{ name = "Tom Ritchford", email = "tom@swirly.com" }]
 requires-python = ">=3.10"
@@ -36,7 +36,7 @@ dev = [
 
 [tool.poetry]
 name = "pullman"
-version = "0.1.0"
+version = "0.12.0"
 description = "🥞 Manage ghstack pull requests 🥞"
 authors = ["Tom Ritchford <tom@swirly.com>"]
 readme = "README.md"