adopt tbump for version control

pyproject.toml

@@ -1,3 +1,47 @@
 [build-system]
 requires = ["setuptools>=42", "wheel"]
 build-backend = "setuptools.build_meta"
+
+[tool.tbump]
+# Uncomment this if your project is hosted on GitHub:
+github_url = "https://github.com/TomSchimansky/CustomTkinter"
+
+[tool.tbump.version]
+current = "3.12"
+
+# Example of a semver regexp.
+# Make sure this matches current_version before
+# using tbump
+regex = '''
+  (?P<major>\d+)
+  \.
+  (?P<minor>\d+)
+  '''
+
+[tool.tbump.git]
+message_template = "Bump to {new_version}"
+tag_template = "v{new_version}"
+
+# For each file to patch, add a [[tool.tbump.file]] config
+# section containing the path of the file, relative to the
+# tbump.toml location.
+[[tool.tbump.file]]
+src = "setup.cfg"
+
+[[tool.tbump.file]]
+src = "customtkinter/__init__.py"
+search = "__version__ = \"{current_version}\""
+
+# You can specify a list of commands to
+# run after the files have been patched
+# and before the git commit is made
+
+#  [[tool.tbump.before_commit]]
+#  name = "check changelog"
+#  cmd = "grep -q {new_version} Changelog.rst"
+
+# Or run some commands after the git tag and the branch
+# have been pushed:
+#  [[tool.tbump.after_push]]
+#  name = "publish"
+#  cmd = "./publish.sh"