The warning messages for missing assigns and missing from now have a
category that is set to `error` by default. Moreover, the message is
expanded to note that `assigns \nothing` and `assigns \from \nothing` is
assumed instead and that the analysis is probably incorrect.

... to assigns:invalid-location

Credit to Thibault Martin

David Bühler authored 2 months ago and Andre Maroneze committed 2 months ago

Prints the relativized filepath instead of the complete path.

Credit to Thibault Martin

- Better names in composition.mli
- Adding @since everywhere
- Some spaces to pin doc onto the module instead of its content