Add 'character_spacing' style property #825

Job	Run time
build_docs	4m 49s
check_docs	43s
check	25s
Ubuntu / 3.9 regression tests	3m 27s
Ubuntu / 3.12 regression tests	10m 41s
Ubuntu / 3.14.0-alpha - 3.14 regression tests	14m 13s
MacOS / 3.13 regression tests	2m 16s
Ubuntu / 3.9 regression tests (Sphinx)	3m 21s
Ubuntu / 3.11 regression tests	10m 24s
Ubuntu / 3.13 regression tests (docutils)	19m 35s
Windows / 3.13 regression tests	1m 53s
Ubuntu / 3.13 regression tests (Sphinx)	16m 48s
Ubuntu / 3.13 regression tests	9m 45s
Ubuntu / 3.10 regression tests	9m 13s
Ubuntu / pypy-3.11 regression tests	17m 23s
Ubuntu / 3.10 unit tests	52s
Ubuntu / 3.9 unit tests	1m 1s
Ubuntu / 3.12 unit tests	55s
Ubuntu / pypy-3.11 unit tests	1m 41s
Windows / pypy-3.11 unit tests	3m 43s
MacOS / pypy-3.11 unit tests	1m 35s
MacOS / 3.11 unit tests	43s
Ubuntu / 3.11 unit tests	52s
Ubuntu / 3.14.0-alpha - 3.14 unit tests	1m 2s
Windows / 3.10 unit tests	2m 7s
MacOS / 3.10 unit tests	54s
MacOS / 3.12 unit tests	38s
MacOS / 3.9 unit tests	50s
Windows / 3.9 unit tests	3m 44s
Windows / 3.12 unit tests	2m 20s
Ubuntu / 3.13 unit tests	1m 0s
MacOS / 3.14.0-alpha - 3.14 unit tests	43s
MacOS / 3.13 unit tests	40s
Windows / 3.14.0-alpha - 3.14 unit tests	2m 18s
Ubuntu / 3.9 unit tests (Sphinx)	1m 12s
Windows / 3.11 unit tests	2m 27s
Windows / 3.13 unit tests	5m 20s
Ubuntu / 3.13 unit tests (Sphinx)	6m 19s
Update docs versions JSON	0s
check-tag	0s
publish-release	0s
publish-develop	0s
	2h 47m 52s

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