warning is shown if the condition of an
if statement can never be true or false,
and the user used the check command.
warnings are not shown when you use `mers run`.
this also includes support for the NoTheme,
a theme which doesn't add any color to mers'
output.
If you compile mers with --no-default-features,
the `colored` dependency will disappear and
mers_lib will fall back to NoTheme.
- fix bug where `thread` function wouldn't error when being called on a non-function
- add compile error when a function in `try` is never used, because this is almost certainly a mistake and will cause mers to unexpectedly go down the "wrong" code path.
- some small changes so mers_lib can be used in another project
- Add type annotations: [type] statement
- Add type definitions: [[name] type], [[name] := statement]
- Add type annotations example (08)
- add Quickstart.md, reference it from README
- some small bugs are now fixed
- include comments in error messages (if this causes issues, use --hide-comments)
- colors should make more sense now
- error-related things moved to mers_lib/src/errors/
