docs(changelog): address review — fix tag, ordering, and 570 ZDE split

- pygae#590: :support: → 🐛 (restores broken CI, not just a workaround)
- pygae#585: move to correct descending-number position (between pygae#587 and pygae#580)
- pygae#570: split ZeroDivisionError fix into separate 🐛`570` entry so it
  leads clearly; :support:`570` retains notebook refresh / tooling content

Author: utiberious

doc/changelog.rst

@@ -10,7 +10,7 @@ Changelog
 
 - :release:`0.6.1 <2026.04.04>`
 
-- :support:`590` Worked around a performance regression in SymPy 1.13 that
+- :bug:`590` Worked around a performance regression in SymPy 1.13 that
   caused ``examples/ipython/LaTeX.ipynb`` (``check('curvi_linear_latex')``) to
   time out after 600 s on SymPy ≥ 1.13.  SymPy PR #26390 added an O(N·M)
   ``.replace()`` traversal inside ``TR3``/``futrig`` that is a no-op for
@@ -33,6 +33,19 @@ Changelog
   ``setup.py`` is removed; ``setup.cfg`` is retained for flake8 configuration.
   See :issue:`586`.
 
+- :support:`585` Expanded and reorganised :meth:`~galgebra.mv.Mv.is_blade`
+  test coverage: replaced a single ad-hoc test with nine focused methods
+  covering every branch of the fixed implementation, including null vectors,
+  null bivectors, non-homogeneous multivectors, the cached-flag path, and
+  the null-blade guards added to
+  :meth:`~galgebra.mv.Mv.reflect_in_blade` and
+  :meth:`~galgebra.mv.Mv.project_in_blade`.  Added a ``slow``-marked test
+  that documents the known grade-≥ 3 limitation (the ``B ^ B == 0``
+  outer-product test can return a false positive for non-blades in spaces
+  of dimension ≥ 6 without coordinates); the R⁶ DFM counterexample is
+  preserved as an executable regression guard.  Registered the ``slow``
+  pytest marker in ``setup.cfg``.  See :issue:`537`.
+
 - :feature:`580` :class:`~galgebra.lt.Mlt` can now be constructed from a
   pre-built sympy component expression by passing the expression as ``f`` together
   with an explicit ``nargs`` argument.  Previously this path raised
@@ -49,19 +62,6 @@ Changelog
   then falls back to the outer-product squaring test ``B ^ B == 0`` for the null
   case. See :issue:`537`.
 
-- :support:`585` Expanded and reorganised :meth:`~galgebra.mv.Mv.is_blade`
-  test coverage: replaced a single ad-hoc test with nine focused methods
-  covering every branch of the fixed implementation, including null vectors,
-  null bivectors, non-homogeneous multivectors, the cached-flag path, and
-  the null-blade guards added to
-  :meth:`~galgebra.mv.Mv.reflect_in_blade` and
-  :meth:`~galgebra.mv.Mv.project_in_blade`.  Added a ``slow``-marked test
-  that documents the known grade-≥ 3 limitation (the ``B ^ B == 0``
-  outer-product test can return a false positive for non-blades in spaces
-  of dimension ≥ 6 without coordinates); the R⁶ DFM counterexample is
-  preserved as an executable regression guard.  Registered the ``slow``
-  pytest marker in ``setup.cfg``.  See :issue:`537`.
-
 - :support:`577` Updated the bundled
   ``doc/books/Macdonald/GAlgebraPrimer.pdf`` to the September 15, 2023 revision
   by Alan Macdonald and corrected the download URL in README and example
@@ -72,18 +72,20 @@ Changelog
   (``doc/dev/releasing.md``). Updated README Python prerequisites.
   See :issue:`571`, :issue:`573`.
 
+- :bug:`570` Fixed a SymPy 1.13 regression where
+  :func:`~sympy.simplify.trigsimp.trigsimp` raises ``ZeroDivisionError`` on
+  certain trig expressions (e.g. prolate spheroidal coordinates) during LaTeX
+  printing in :meth:`~galgebra.mv.Mv._latex`.  The broad ``except Exception``
+  was narrowed to ``except ZeroDivisionError`` only, falling back to the
+  expanded form for display.  See :issue:`566`.
+
 - :support:`570` Refreshed notebook outputs for SymPy 1.13 printing changes
   (``\cdot`` in ``Mul`` expressions and column-format specifiers in
-  ``\begin{array}``).  Also fixes a SymPy 1.13 regression where
-  :func:`~sympy.simplify.trigsimp.trigsimp` raises ``ZeroDivisionError``
-  on certain trig expressions during LaTeX printing in
-  :meth:`~galgebra.mv.Mv._latex`; the catch is now narrowed to
-  ``ZeroDivisionError`` only, falling back to the expanded form for display.
-  Added ``scripts/validate_nb_refresh.py`` — a reusable tool that mechanically
-  confirms a notebook re-execution introduced only cosmetic changes.
-  Added ``doc/dev/bumping-sympy.md`` developer guide (version policy, local
-  testing, notebook refresh workflow).
-  Bumped ``test_requirements.txt`` pin from ``sympy == 1.12`` to
+  ``\begin{array}``).  Added ``scripts/validate_nb_refresh.py`` — a reusable
+  tool that mechanically confirms a notebook re-execution introduced only
+  cosmetic changes.  Added ``doc/dev/bumping-sympy.md`` developer guide
+  (version policy, local testing, notebook refresh workflow).  Bumped
+  ``test_requirements.txt`` pin from ``sympy == 1.12`` to
   ``sympy == 1.13.3``.  See :issue:`568`, :issue:`566`.
 
 - :bug:`569` :class:`~galgebra.lt.Lt` now accepts an