Rust macros, while at times useful, are a maintenance nightmare. And
we have been bitten by calling macros from other crates multiple times
in the past.
In a push to just use less macros remove the usage of the
`impl_from_infallible` macro in all the leaf crates and just write the
code.
Add all the pedantic lints to the repository by way of the repository
manifest. Then enable these lints in the `units` manifest.
Some things worth mentioning:
- Fix `needless_pass_by_value` by adding derives to `FormatOptions`.
- Fix lint `cast_lossless` using `cargo clippy --fix``
- While fixing `lint enum_glob_use` introduce a new style to the
codebase; import enums using a single character. Doing so prevents
namespace clashes, improves clarity, and maintains terseness.
Audit:
Use the following lints locally and audit all the warnings, they produce
many false positives so we can't enable them permentently.
- `cast_possible_truncation`
- `cast_possible_lint`
- `cast_sign_loss`
Close the two pubic enum error types in `units::amounts`. All the other
structs are closed already because they either have private fields or
marked `non_exhaustive`.
There is _a lot_ of error types in the `amount` module. Move them to a
separate `error` module.
Add a bunch of `pub(super)` to keep things private to the `amount`
module.
Eventually we will want to close all these errors.
Tobin C. Harding