setup.cfg: use bumpversion to update versions in setup.py and fontTools/__init__.py

make bumpversion configuration aware of pre-release .devN suffix

setup.cfg

@@ -1,9 +1,28 @@
 [bumpversion]
 current_version = 3.3.1.dev0
 commit = True
-tag = True
+tag = False
 tag_name = {new_version}
-files = Lib/fontTools/__init__.py
+parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\.(?P<release>[a-z]+)(?P<dev>\d+))?
+serialize = 
+	{major}.{minor}.{patch}.{release}{dev}
+	{major}.{minor}.{patch}
+
+[bumpversion:part:release]
+optional_value = final
+values = 
+	dev
+	final
+
+[bumpversion:part:dev]
+
+[bumpversion:file:Lib/fontTools/__init__.py]
+search = __version__ = "{current_version}"
+replace = __version__ = "{new_version}"
+
+[bumpversion:file:setup.py]
+search = version="{current_version}"
+replace = version="{new_version}"
 
 [wheel]
 universal = 1
@@ -30,3 +49,4 @@ addopts =
 	-r a
 	--doctest-modules
 	--doctest-ignore-import-errors
+