[new release] minicaml (0.3.1) (#15605)
[new release] minicaml (0.3.1) (#15605)

* [new release] minicaml (0.3.1)

CHANGES:

### Added
- `map2` primitive
- Reading programs from files
- An abstraction that allows treating primitives as functions, and so allows
  currying and all the fancy stuff.
- Examples in the `examples/` directory
- *Greater or equal to* and *Less than or equal to* operators
- More test coverage.
### Bugfixes
- Fixed various bugs of 0.3

* Opam: remove redundant field

Co-authored-by: Marcello Seri <f847f5039ad7d9a85ca74f1b33de0db2313f7610@users.noreply.github.com>

fdopen/opam-repository-mingw,fdopen/opam-repository-mingw