ipaddress should accept bytearray in addition to bytes

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2018-08-22.19:48:00.413>
labels = ['3.8', 'type-feature', 'library']
title = 'ipaddress should accept bytearray in addition to bytes'
updated_at = <Date 2018-09-11.16:35:00.331>
user = 'https://github.com/joernheissler'

bugs.python.org fields:

activity = <Date 2018-09-11.16:35:00.331>
actor = 'joernheissler'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2018-08-22.19:48:00.413>
creator = 'joernheissler'
dependencies = []
files = []
hgrepos = []
issue_num = 34465
keywords = ['patch']
message_count = 10.0
messages = ['323906', '323982', '324047', '324050', '324051', '324052', '324437', '324969', '325017', '325024']
nosy_count = 7.0
nosy_names = ['gregory.p.smith', 'ncoghlan', 'pmoody', 'serhiy.storchaka', 'xiang.zhang', 'joernheissler', 'prudvinit']
pr_nums = ['8908']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue34465'
versions = ['Python 3.8']