Update CHANGELOG.md

This commit brings the Changelog up-to-date.

CHANGELOG.md

@@ -35,6 +35,8 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - Two new initial conditions have been added to Rayleigh that allow existing thermal and magnetic fields to be augmented at restart with user-supplied profiles for entropy, and the toroidal and poloidal flux functions. \[Bhishek Manek; 12-5-2023; [488](https://github.com/geodynamics/Rayleigh/pull/488)\]
 
 - A new constant, c_11, has been added to Rayleigh's equation set.  This constant multiplies the background entropy profile so that it may be rescaled at runtime, if desired.  \[Loren Matilsky; 12-5-2023; [489](https://github.com/geodynamics/Rayleigh/pull/489)\]
+
+- Rayleigh now supports the MPI_f08 module (in addition to the older MPI module).  To use MPI_f08, call Rayleigh's configure script with the --mpi-f08 flag.  \[Philipp Edelmann; 2-29-2024; [497](https://github.com/geodynamics/Rayleigh/pull/497)\]
 
 ### Changed
 - plot_Shell_Slices.py now generates a Mollweide plot. \[Nick Nelson; 9-12-2022; [#372](https://github.com/geodynamics/Rayleigh/pull/372)\]
@@ -43,6 +45,8 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 - The Readthedocs build environment is now managed using Mamba instead of Conda \[Nick Featherstone; 11-14-2022; [#413](https://github.com/geodynamics/Rayleigh/pull/413)\]
 
+- The AZ_Avgs and Shell_Avgs classes in rayleigh_diagnostics.py now support time-averaging and concatenation of multiple files.  The time-averaged or concatenated data can be output to a new AZ_Avgs or Shell_Avgs file with the same format as that used by Rayleigh.  Run help(AZ_Avgs) or help(Shell_Avgs) to see examples of calling syntax.  \[Nick Featherstone; 5-7-2024; [#499](https://github.com/geodynamics/Rayleigh/pull/499), [#500](https://github.com/geodynamics/Rayleigh/pull/500)\]
+
 - 
 ### Fixed
 - plot_G_Avgs.py now correctly handles multiple files containing differing numbers of timesteps \[Philipp Edelmann; 9-13-2022; [#383](https://github.com/geodynamics/Rayleigh/pull/383)\]
@@ -55,6 +59,8 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 - A bug preventing Rayleigh from respecting the users choice of heating function in some instances has been corrected.  \[Loren Matilsky; 4-3-2023; [#492](https://github.com/geodynamics/Rayleigh/pull/492)\]
 
+- The equation_coefficients class in rayleigh_diagnostics.py is now properly version-aware when reading in new or old equation_coefficients files \[Loren Matilsky; 5-7-2024, [#501](https://github.com/geodynamics/Rayleigh/pull/443); 3-29-2023, [#447](https://github.com/geodynamics/Rayleigh/pull/501);\]
+
 ## [1.1.0] - 4-29-2022
 ### Added
 - Added new main_input class to rayleigh_diagnostics.py.   Usage examples are provided in Rayleigh/examples/main_input_class. \[Nick Featherstone; 1-11-2022; [#352](https://github.com/geodynamics/Rayleigh/pull/352)\]