add (user-oriented) release notes to Reference Manual #1013

Job	Run time
Py3.10; no Slycot; no Pandas; no CVXOPT	5m 59s
Py3.10; no Slycot; no Pandas; conda CVXOPT	6m 7s
Py3.10; conda Slycot; no Pandas; no CVXOPT	6m 4s
Py3.10; conda Slycot; no Pandas; conda CVXOPT	6m 11s
Py3.12; no Slycot; no Pandas; no CVXOPT	6m 16s
Py3.12; no Slycot; no Pandas; conda CVXOPT	6m 32s
Py3.12; conda Slycot; no Pandas; no CVXOPT	6m 35s
Py3.12; conda Slycot; no Pandas; conda CVXOPT	6m 57s
Py3.12; conda Slycot; conda Pandas; conda CVXOPT ; QtAgg	7m 2s
Finalize parallel coveralls	4s
	57m 47s

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