This is a major release, which is tied to the publication of PyAutoGalaxy in the Journal of Open Source software (JOSS).
This release updates many aspects of the API, switches configuration files to YAML, updates library requirements and adds new functionality.
**API Changes:**
- All elliptical light profiles and mass profiles no longer prefix with the `Ell` tag, for conciseness / readability. For example, `EllSersic` is now just `Sersic`, and `EllIsothermal` is now `Isothermal`.
- The `Sph` prefix is now a suffix, for example `SphSersic` is now `SersicSph` and `SphIsothermal` is now `Isothermal`.
- The ``elliptical_components` parameter has been shorted to `ell_comps`.
- The `ExternalShear` input has been changed from `elliptical_components` to `gamma_1` and `gamma_2` (the shear is still defined the same, where in the olversion version `elliptical_components[0] = gamma_2` and ` elliptical_components[1] = gamma_1`.
- The `manual_` API for data structures (e.g. `Array2D`, `Grid2D`) has been removed.
**Yaml Configs**
- Configuration files now support `.yaml`, which is provided with the autolens_workspace (https://github.com/Jammy2211/autogalaxy_workspace/tree/release/config).
- The workspace configuration files are now fully documented,.
**Linear Light Profiles / Basis / Multi Gaussian Expansion**
Linear light profiles are now supported, which are identical to ordinary light profiles but the `intensity` parameter is solved for via linear algebra. This means lower dimensionality models can be fitted, making dynesty converge more reliably:
https://github.com/Jammy2211/autogalaxy_workspace/blob/release/scripts/imaging/modeling/light_parametric_linear__mass_total__source_parametric_linear.py
Fits use a `Basis` object composed of many linear light profiles are supports, for example using a Multi Gaussian Expansion of 20+ Gaussians to fit the lens's light:
https://github.com/Jammy2211/autogalaxy_workspace/blob/release/scripts/imaging/modeling/light_parametric_linear__mass_total__source_parametric_linear.py
These features are described fully in the following `HowToGalaxy` tutorial:
https://github.com/Jammy2211/autogalaxy_workspace/blob/release/scripts/howtogalaxy/chapter_2_modeling/tutorial_5_linear_profiles.py
**API Documentation**
API documentation on readthedocs is now being written, which is still a work in progress but more useable than it was previously (https://pyautogalaxy.readthedocs.io/en/latest/api/data.html).
**Requirements**
The requirements of many projects have been updated to their latest versions, most notably `dynesty v2.0.2`.