Clean-up hh5 references, and other logkeeping/documentation fixes

[marc-white]

Closes #273 .

This PR:

• Removes references to hh5 and the access-med environments;
• Updates the documentation, including the example Jupyter notebooks, to reflect this;
• Updates the changelog to include versions 0.14 and 0.15. Version 1.0.0 changelog should be done at time-of-release.

Given @rbeucher will be linking openmpi into the conda/analysis3 module load, I've left that out as an explicit requirement at all places, unless the user is going to be catalog building - there it is recommended to be sure (belt & braces).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.44%. Comparing base (39bea88) to head (12f4b79).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #275   +/-   ##
=======================================
  Coverage   98.44%   98.44%           
=======================================
  Files          11       11           
  Lines         838      838           
=======================================
  Hits          825      825           
  Misses         13       13           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[charles-turner-1]

Looks good.

I've also checked out the branch and grepped for hh5 so I'm confident that you've found every instance

[charles-turner-1]

Maybe additionally note catalog version no longer bound to package version?

[marc-white]

We're going to have to update the changelog for the release anyway, perhaps we make that point there?

[charles-turner-1]

This is potentially the most inane comment I've ever made, but I think we might want to rebuild the docs here after the release so that the warnings point to the right path - not your home dir.

[rbeucher]

Feel free to merge @marc-white