Document or rename markers.format_full_version()

[brettcannon]

packaging/packaging/markers.py

Lines 249 to 254 in 171e4fb

	def format_full_version(info: "sys._version_info") -> str:
	version = "{0.major}.{0.minor}.{0.micro}".format(info)
	kind = info.releaselevel
	if kind != "final":
	version += kind[0] + str(info.serial)
	return version

The function isn't exposed via __all__, but it isn't named to be considered privately, either. Not sure if we should document it or rename it so it's visibly private.