VERY IMPORTANT: Adding the Estuarine Carbon Biogeochemical Model

[arango]

This PR adds a new model to the ROMS suite of ecosystem kernels. The Estuarine Carbon Biogeochemical (ECB) model was developed by colleagues (Feng et al., 2015, and follow-ups) at the Virginia Institute of Marine Science (VIMS), William & Mary.

For more information, please check:

​https://github.com/myroms/roms/pull/61

It is currently in the feature/ecb branch until colleagues at VIMS review and test it before merging to the develop branch.

[arango]

Many thanks to Pierre St-Laurent for testing and correcting the feature/ECB branch implementation.

Congratulations to the VIMS team for coding the ECB model. It is well documented in the literature, and the papers are clear, well-written, and easy to follow.

The code is also well-written and thoroughly documented. I appreciate that all the contributors follow our standard in ROMS when adding a generic ecosystem kernel.

[arango]

I pushed the wrong button when closing the ticket. It says it WillNotFix instead of Done.