Manage memory lifetime for all type-related objects.

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2019-06-13.21:31:34.693>
labels = ['extension-modules', '3.9']
title = 'Manage memory lifetime for all type-related objects.'
updated_at = <Date 2019-06-13.21:33:06.241>
user = 'https://github.com/llllllllll'

bugs.python.org fields:

activity = <Date 2019-06-13.21:33:06.241>
actor = 'llllllllll'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Extension Modules']
creation = <Date 2019-06-13.21:31:34.693>
creator = 'llllllllll'
dependencies = []
files = []
hgrepos = []
issue_num = 37270
keywords = ['patch']
message_count = 1.0
messages = ['345539']
nosy_count = 1.0
nosy_names = ['llllllllll']
pr_nums = ['14066']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue37270'
versions = ['Python 3.9']