Several developments for the AMOC analysis

[ledm]

This includes several developments for the AMOC analysis:

• New regions
• New datasets
• New tool to make a generic map legend
• Revisions to the remove mask from shelve tool
• New self destruct code in mass
• New circulation code
• Ice area superceded ice extent
• yml's now have yml anchors instead of repeating the same suites list.

[ledm]

The test is failing because I added the 500m layer to key_files/temperature.yml. Apparently, this fails the test?

[valeriupredoi]

The test is failing because I added the 500m layer to key_files/temperature.yml. Apparently, this fails the test?

I think it's tested against that file, let me see

[valeriupredoi]

yep, just add the "500m" member in the list here tests/integration/test_analysis_timeseries.py::test_load_key_file pls bud :beer: