Qgs

Minor release including 3 important bugfixes

Changelog

* A bugfix to make sure that the two available heat exchange and T° schemes are not used concomitantly: https://github.com/Climdyn/qgs/commit/f96303cc6bd36560bc089eab6c023b1918a36a45
* The correction of 2 bugs with the symbolic model version of the land-atmosphere coupled model: https://github.com/Climdyn/qgs/commit/e9391826dd48d7a0a28251ff3227e254a451db1d
* A bugfix for an issue with the symbolic inner products when changing the aspect ratio of the model domain: https://github.com/Climdyn/qgs/issues/17
* A [new vertical wind velocity diagnostic](https://github.com/Climdyn/qgs/pull/16) in the middle of the atmosphere
* Some corrections in the documentation

Release of the new $T^4$ dynamical temperature scheme

Changelog

1. New profile plot diagnostic to plot meridional or zonal profiles
2. Implementation of the dynamical reference temperatures (instead of fixed ones)
3. Implementation of the quartic $T^4$ tendencies
4. Corrected bug https://github.com/Climdyn/qgs/issues/14 of the diagnostic classes
5. Added a specific basis for the orography in diagnostics
6. [Addition of a new diagnostic for meridional atmospheric temperature gradient](https://github.com/Climdyn/qgs/commit/a5cb497d1cdeef4506f7fcb2d570f8b236f15a31)
7. [Added a tangent linear and adjoint model test](https://github.com/Climdyn/qgs/commit/d8dfc36dd77cf633f3a4eee1e1281d02927b45b8)
8. Addition of several example notebooks
9. Minors change (typos, contributors file, etc...)

Release of the Lyapunov toolbox module:

Changelog

1. New class to compute the *Forward* and *Backward* Lyapunov vectors.
2. New class to compute *Covariant* Lyapunov vectors.

First release for the visualization system of the model, based on `Diagnostic` classes.
This one implements an important piece that was missing before the v0.3 release can occur (later this year).

Changelog

First implementation of the diagnostic module:

* Base classes to define diagnostics
* First batch of diagnostics useful for the model
* Multiple diagnostics classes to plot them simultaneously
* Documentation (API + user guide + example)
* Example notebooks

Other important changes:

* Numerical quadrature of symbolic inner products (it is now the default
way to compute them) + timeout in the case of symbolic integration
before falling back to quadrature

And finally various minor changes and bugfixes.

Forthcoming

More diagnostics for the model will be implemented this year.

Reorganization of the core of the code into a single `qgs` to enhance readability and searching.
Solve the issue https://github.com/Climdyn/qgs/issues/7 .
Related to the discussion on the JOSS review: https://github.com/openjournals/joss-reviews/issues/2597#issuecomment-741610669

Thanks to sadielbartholomew for the suggestion.

Changelog

* Mainly moving files to new directories and adapting links and import statements

Release of the new core to compute the inner products.
Addition of the user guide to the documentation.