edited change log

Author: sshiraiwa

docs/changelog.txt

@@ -1,5 +1,24 @@
         <<<  Change Log. >>>
-
+2025 06
+      * PyMFEM 4.8
+        - Default branch is set to MFEM 4.8 release
+	- Support Python 3.12 and Python 3.13.
+	- Python 3.8 is not supported anymore.
+	- Last version to support Python 3.9
+	- Install process is overwhauled,
+	   -- wheel is build both on Linux and Mac.
+	   -- local build-from-source is now done by "pip install . ", not "python setup.py install".
+	   -- ad-hoc call of chrpath is removed.
+	- migrated to numpy 2.
+	- added custom numba-compiled bessel function to eliminate numba-scipy dependency
+	- ex40 and ex40p are translated.
+	- updated HYPRE version to 2.32
+	- wrappers for the following MFEM objects are added
+	    -- Array2D
+	    -- IterativeSolverController;
+	    -- CoefficientPtrArray
+	    -- VectorCoefficientPtrArray
+	    -- MatrixCoefficientPtrArray
 2024 08
       * MFEM 4.7 support
         - AttributeSets are supported. ex39 and ex39p are added to demonstrate how to use it from Python