v6.14 OAUT2 token expire fix, external child timeout fix
- #64 getmail6: sometimes dies on running external filter program in version 6.13
- #65 Wait much longer, and raise an exception when timeout (pull from ykasap/fix-timeout to solve #64)
- #63 Trap exceptions caused by xoauth2 token expiration
- #61 Refresh the OAuth access token when reconnecting (IMAP IDLE)
This CHANGELOG entry was updated only after setting the tag v6.14, but the fixes are in the tag, of course.