LoginParamNew structure, which contained possible IMAP and SMTP
configurations to try is replaced with uniform vectors of ServerParams
structures. These vectors are initialized from provider database, online
Mozilla or Outlook XML configuration or user entered parameters.
During configuration, vectors of ServerParams are expanded to replace
unknown values with all possible variants, which are tried one by one
until configuration succeeds or all variants for a particular protocol
(IMAP or SMTP) are exhausted.
ServerParams structure is moved into configure submodule, and all
dependencies on it outside of this submodule are removed.
instead of applying all config_defaults unconditionally
after the first configure, a config_defaults for a given key
is now applied when this key has never been set before.
this way, you can set some keys before calling configure()
and also, later versions can add new defaults for new keys
(that would require another call to configure() then, however)
This tidies up our testing tools a little bit. We had several
functions which through various changes ended up doing the same and
some more which did very similar stuff, so I merged them to have
things simpler. Also moved towards methods on the TestContext struct
while cleaning this up anyway, seems like this structure is going to
stay around for a bit anyway.
The intersting change is in `test_utils.rs`, everything else is just
updating callers. A few tests used example.org which I moved to
example.com to be able to re-use more configuration of the test
context.
the advanced options are not used anyway later,
but prevent imap/smtp connections from being altered.
nb: we want to stop altering when some advanced options
are entered, however, we want to do this probaby
not depending on autoconfig.
Now configure module is no longer public. Users should call
Context.configure() and Context.is_configured() methods.
Configure module is completely hidden from documentation unless
--document-private-items option is specified.
