=====

- Change all Down/Up shortcuts to j/k
- add 'GB18030' charset
- melib/nntp: implement refresh
- melib/nntp: update total/new counters on new articles
- melib/nntp: implement NNTP posting
- configs: throw error on extra unusued conf flags in some imap/nntp
- configs: throw error on missing `composing` section with explanation

Fixed
=====

- Fix compilation for netbsd-9.2
- conf: fixed some boolean flag values requiring to be string e.g. "true"