Update CHANGELOG.rst and clean up tox.ini

CHANGELOG.rst

@@ -83,6 +83,9 @@
     support addition of Spectrum2DCollection and improve
     maintainability.
 
+  - Entire build system rework, migrating to ``pyproject.toml`` form
+    with ``meson-python``, ``cibuildwheel`` and removing
+    ``versioneer`` to simplify future development and maintenance.
 
 `v1.3.2 <https://github.com/pace-neutrons/Euphonic/compare/v1.3.1...v1.3.2>`_
 -----------------------------------------------------------------------------
@@ -619,7 +622,7 @@
   - Default Monkhorst-Pack meshes (i.e. [6, 6, 6] in ``euphonic-dos``
     and [20, 20, 20] in ``sample_sphere_structure_factor()``) have
     been replaced by default grid-spacing values.
-  
+
   - The scaling of density of states has changed, due to a change
     in implementation
 

tox.ini

@@ -16,8 +16,7 @@ install_command =
         --upgrade \
         --upgrade-strategy eager \
         {opts} \
-        {packages} \
-        --config-setting=setup-args='--vsenv'
+        {packages}
 deps =
     numpy
     -r{toxinidir}/tests_and_analysis/tox_requirements.txt
@@ -88,7 +87,7 @@ commands =
 [testenv:py310-minrequirements-linux]
 whitelist_externals = rm
 install_command =
-    python -m pip install --force-reinstall {opts} {packages} --config-setting=setup-args='--vsenv'
+    python -m pip install --force-reinstall {opts} {packages}
 platform =
     linux: linux
 deps =