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.
- 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/
&v = (v, 1).sum might fail if two threads do it at the same time or something, so you can now lock the reference to ensure no other thread messes with your data while you update its value
