Feature: Symbolic outputs of tendencies

[jodemaey]

No description provided.

[jodemaey]

Hi @ushham ,

I have created this PR because we need to move on with the symbolic outputs.
There is a merge conflict, but it is not a big deal (it is in a docstring).

How I see this evolves is that we still clean some stuffs (mainly notebooks and tests), then we merge this PR.
Then we start a new branch to document the new functionalities in the doc.

See you soon to discuss this.

J.

[jodemaey]

Hi @ushham ,

So I have deleted the old notebooks and created 2 new ones in the notebooks/symbolic_outputs folder.
Please check them. Also I resolved the merge conflict.

A problem remains with the tests. They are not passing and I think I know why, and we should discuss that asap. Then I think you should review one last time and we can merge.

J.

[ushham]

Should we update the version number in the toml file?

[jodemaey]

Not yet. This is not the final PR before the release.

[ushham]

In that case, this looks good to me