Test

Add sphinx-rtd-theme to documentation requirements #531

Job	Run time
Python 3.8 / dj32	1m 17s
Python 3.8 / dj41	48s
Python 3.8 / dj42	52s
Python 3.9 / dj32	1m 3s
Python 3.9 / dj41	58s
Python 3.9 / dj42	58s
Python 3.10 / dj32	52s
Python 3.10 / dj41	52s
Python 3.10 / dj42	48s
Python 3.11 / dj32	1m 28s
Python 3.11 / dj41	1m 0s
Python 3.11 / dj42	49s
Python 3.12 / dj32	1m 9s
Python 3.12 / dj41	1m 19s
Python 3.12 / dj42	1m 9s
Python 3.10 / djmain	1m 11s
Python 3.11 / djmain	50s
Python 3.12 / djmain	1m 32s
Indicate completion to coveralls.io	14s
	19m 9s

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