Getmail

- 116: Update to avoid use of depreciated Google OAuth2 flow
- 114: Fails with "Killed" when retrieving large emails
use timeout for socket also as wait timeout for child
- 112: getmail keeps downloading the whole mailbox
new to_oldmail_on_each_mail option.
- 111: DeprecationWarnings from ssl

- 104: add config parameter to MDA_lmtp to override recipient address (WIP)
- 103: Fix random token generation
- 101: Fix ignored netrc_file option
- 94: bad message from server!' and empty messages

- 93: IMAP: Deal better with untagged status updates
- 95: UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa9 in position 0: invalid start byte
- 96: getmail_fetch: TypeError: method expected 2 arguments, got 3

- 91: UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 11: ordinal not in range(128)
- 92: getmail_maildir: bugfix for python3 using bytes buffer instead of str
- add new use_netrc and netrc_file configuration options to support reading secrets from a .netrc file
(https://marc.info/?l=getmail&m=163241430111986&w=3).

- 89: fetchmail feature: skip fetching read mail.
New `imap_search` and `imap_on_delete` to fetch only `Unseen` messages and set them to `\Seen`.
- add `-s/--searchset` to override imap search and setting of flags for all rcfile's in the command
- if no `--rcfile` and no default `getmailrc`, then use all but `oldmail-` files from the `--getmaildir` folder
- fix "SyntaxError: Non-ASCII in file, but no encoding declared" (only Python 2.7)