Bump version to 0.5.0.

Author: lordjabez

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "requestium"
-version = "1.0.0"
+version = "0.5.0"
 readme = { file = "README.md", content-type = "text/markdown" }
 requires-python = ">=3.10"
 license = { file = "LICENSE" }