Now imapsql module does not handle authentication. (it was not doing it so well
anyway)
sql_table module was introduced and used in the default configuration as
a replacement for functionality that was implemented by imapsql before.
Parts of maddyctl code were rewritten to make it work transparently with
any IMAP backend or credentials store.
Closes#212.
Now it is not tied go-imap-sql details (with the exception of special
features), allowing it to be used with other storage backends that will
be added in the future.
--unsafe flag is removed and now maddyctl explicitly asks for
confirmation in cases where transaction may be unsafe for connected
clients. --yes flag disables that. In the future, maddy can be
extended with IPC interface to push updates so it this restriction
can be lifted altogether.