Added a nicely formatted changelog

docs/index.rst

@@ -67,6 +67,7 @@ like the solar system.
    :caption: For developers/contributors
 
    Contributing Guide <contributing>
+   What’s New <whats-new>
    GitHub repository <https://github.com/profminton/swiftest>
 
 .. toctree::

docs/whats-new.rst

@@ -0,0 +1,107 @@
+.. currentmodule:: swiftest
+
+What's New
+==========
+
+v2024.03.0 
+------------
+
+New Features
+~~~~~~~~~~~~
+
+- Incorporation of `SHTOOLS <https://shtools.github.io/SHTOOLS/>`__ for incorporating gravitational harmonics coefficients into the central body gravity field calculations.
+- Introduction of rotation matrix calculations for non-z-axis central body rotation vectors, supporting more accurate precession effects.
+- Enhancement of the netCDF output capabilities, including the addition of dimension-coordinates for c_lm arrays and support for spherical harmonics parameters.
+
+Bug Fixes
+~~~~~~~~~
+
+- Fixed a bug that was causing the spin poles of massive bodies to be calculated incorrectly when pulling ephemerides from JPL/Horizons using `:py:meth:swiftest.Simulation.add_solar_system_body`.
+- Correction of various typos and minor bugs across the documentation and codebase, improving clarity and accuracy.
+- Fixing of floating underflow errors and adjustments to normalization calculations to reduce computational errors.
+
+Documentation
+~~~~~~~~~~~~~
+
+- Major updates to user guides and API documentation.
+
+Breaking changes
+~~~~~~~~~~~~~~~~
+
+- Support for ``python 3.8`` has been dropped and the minimum versions of some dependencies were changed.
+
+  ===================== ========= =========
+   Package                    Old       New
+  ===================== ========= =========
+   python                     3.8       3.9
+   numpy                   1.24.3    1.26.4
+   scipy                   1.10.1    1.12.0
+   matplotlib               3.7.1     3.8.0
+   astropy                    5.2     6.0.0
+   dask                    2023.5  2024.2.1
+   distributed             2023.5  2024.2.1
+   h5netcdf                   1.1     1.3.0
+   h5py                       3.9    3.10.0
+   bottleneck               1.3.5     1.3.8
+   cython                   3.0.0     3.0.8
+   tqdm                      4.65    4.66.2
+  ===================== ========= =========
+
+
+v2023.12.1
+----------
+
+Improvements to the documentation and documentation build process.
+
+- Docstrings in the Python project files have been formatted for better rendering and numerous small inconsistencies and errors have been corrected.
+- Restructured the project so that the Fortran code does not have to be compiled when generating documentation for swiftest.readthedocs.io.
+- Refactored many swiftest.io functions to indicate that they are not part of the public API.
+- Added a more comprehensive list of sections to the API page.
+
+
+
+v2023.12.0
+----------
+
+Minor changes aimed at building a better set of documentation pages.
+
+- Created a new swiftest.readthedocs.io page
+- Added sphinx-based documentation for the Python side and FORD-based documentation for the Fortran side
+- Improved docstrings in simulation_class.py in order to conform to sphinx guidelines.
+
+
+v2023.11.0
+----------
+
+- Fixed a bug that was causing some runs to fail when there were no massive bodies in the system.
+
+
+v2023.10.2
+----------
+
+Official release for the Journal of Open Source Software.
+
+
+v2023.10.1
+----------
+
+Bug fixes to Fraggle and improvements to the fragmentation test movie scripts.
+
+- Fixed issue that caused momentum convergence to be unstable due to floating point precision.
+- Tweaked the fraggle convergence loop limits to get a higher success rate in fitting angular momentum and energy constraints.
+- Fixed a typo in an OpenMP reduction declaration in the subroutine swiftest_kick_getacch_int_all_tri_rad_pl
+
+
+v2023.10.0
+----------
+
+Minor changes and one bugfix.
+
+- Changed the dependency build scripts from using Automake to CMake for performance and robustness.
+- Fixed bug that was preventing initial conditions file from being saved when new bodys are added in multiple add_solar_system_body calls
+
+
+v2023.09.3 Pre-release
+---------------------- 
+
+This release will become the first full release of Swiftest. Any previous releases contained a major bug that resulted in incorrect G*Mass values being used for bodies pulled from JPL Horizons. As the code is still undergoing review and testing, this will be set as a pre-release.