82     def extract_top_version(cls, changelog_file_content):  argument
97     def version_title_text(cls, version_title):  argument
102     def split_categories(cls, version_body):  argument
111     def format_category(cls, title, body):  argument
120     def is_released_version(cls, title):  argument
128     def extract_top_version(cls, changelog_file_content):  argument
130         m = re.search(cls._top_version_re, changelog_file_content)
135         name = re.match(cls._name_re, top_version_title).group(1)
136         if cls.is_released_version(top_version_title):
138             top_version_title = cls._unreleased_version_text.format(name) + '\n\n'
145     def version_title_text(cls, version_title):  argument
150     def split_categories(cls, version_body):  argument
154         title_matches = list(re.finditer(cls._category_title_re, version_body))
171     def format_category(cls, title, body):  argument
323     def merge_hash(cls, some_hash):  argument
332         ancestry = frozenset(cls.list_merges(some_hash, target,
336         first_parents = cls.list_merges(some_hash, target,