Changes

Add experimental softmap support

Softmaps are rather experimental, so it is possible
that we move to more traditional static mappings formats
in the future.

Perhaps using an Enigma + Matcher + TinyV2 (using mapping-io)
toolchain combo isn't all too bad? Especially if snod
stops working on this game such a combdo would work well
(especially since the 'magic' Matcher component would be
superflouous). Alternatively we could stick on 5.0.2 forever,
but what is the point in that, my dear readers?
 (commit: f76bd4d)