Work with mapmode-c bindings

[orbisvicis]

Also a big request. Don't know if its possible, but would be very nice.

[paradigm]

Not sure what order you'll view these in, so I'm going to prefix all of the
recent issues you've made with:

I've got a skybison 2.0 ~90% done with many improvements. There's some
(external) blockers keeping me from finishing and publishing it (and a bunch of
other vim projects of mine...) immediately, but I fully plan to do so as soon
as is reasonably possible.

---

The 2.0 stuff includes the ability to have it utilize
insert/normal/operator-pending/etc, a la cmdline-window. When doing this, it
will Just Work with insert/normal/operator-pending/visual/etc mappings, and can
be easily configured to use new mappings that are limited to / specifically for
skybison.

While I've not yet implemented it (last ~10% to do), I strongly suspect the
strategy utilized for the insert/normal/operator-pending/etc mappings should
carry over to cmdline mappings to get a similar effect. I can't make any
promises, but I figure there is a good chance 2.0 will release with this
feature working out-of-the-box.