parser: Change `Map` to a tuple type alias

Investigating why I'm not getting error messages in my parsed result.
The layer where I stop getting them is when parsing to a
`MapCollection`.

Split the list of `map()` parser out from `map_collection()` to get more
information. Turns out that the new `maps()` parser is now where parse
errors get discarded.

In an attempt to get the errors to appear, I tried to replicate the
structure of Combine's INI example parser:
https://github.com/Marwes/combine/blob/921202a018000041c9d3e8b12b7c1a53d0252f67/examples/ini.rs

That program makes a `property()` parser which outputs a 2-tuple of
`(String, String)`, and a `properties()` parser which outputs a
`HashMap<String, String>`, using the values in the tuple to construct
the HashMap.

Unfortunately, this change didn't solve the problem of the non-bubbling
error messages. Unsure about whether or not to keep this change.

0 files changed, 0 insertions, 0 deletions