Had to refactor the multi-value parameter stuff to push some of the key
information in to the generics structure, as they necessarily change
the conversion function signature. Some code has gotten folded
together by being a bit sloppier with inputs and outputs.
This should put us well on our way to having functioning value
conversion, which I think is the main major feature remaining besides
help text generation. Hopefully I won't need to rewrite everything
like this again. While this design seems to be on track to incorporate
all of the main features I am interested in, it has been a lot of work
to wrangle it around, and there is still a lot of work left before I
can put a bow on it.
Also work on a generic runtime parser interface for attaching
subcommands. This will allow subcommands to live in a mapping or
something at runtime which will simplify their use.
This is basically a full rewrite but with a much more solid concept of
what the public API looks like, which has informed some of the
lower-level decisions. This is not at feature parity with the main
branch yet, but it does handle some things better. The main
functionality missing is the help text generation and subcommands.
There's still some design to think about on the subcommand side of
things.
