[#41] Bump morley with autodoc updates

Description

Problem: a severe refactoring took place in Lorentz' autodoc, we have to follow the changes.

Solution: bump morley, deprecate what is now deprecated in Lorentz.

I do not deprecate contractName because there are similar description and other methods.

Related issue(s)

Resolves #41 (closed)

✅ Checklist for your Merge Request

Related changes (conditional)

• Dependencies

  • We depend only on package versions that have been released on hackage (i.e., we don't fetch dependencies from git repositories). Failing that, we depend only on commits from the project's master branch, and not from any other branch.

• Tests (see short guidelines)

  • If I added new functionality, I added tests covering it.
  • If I fixed a bug, I added a regression test to prevent the bug from silently reappearing again.

• Documentation

  • I checked whether I should update the docs and did so if necessary:
    • Root README and other README.md files
    • Haddock
    • docs/
  • I updated changelog files of all affected packages released to Hackage if my changes are externally visible.

Stylistic guide (mandatory)

• My commits comply with the following policy.
• My code complies with the style guide.