* mu: update the server command and (use 'cmd:' for commands)
* lib: add mu_str_parse_arglist + unit tests
* mu4e: use the new server protocol
*  lib: fix compiler warning
* mu4e: some fixes in mu4e-proc
* mu4e: show 'None' as date for (0 0 0) in :human-date
* mu4e: mu4e-proc: fix ping, quit
* mu4e-header: fix jumping to maildirs with spaces
* mu4e: fix some weirdness with editing drafts
* update NEWS
* improve message-composition / draft handling
* cosmetic