Update README and mention supported file types #1342

Job	Run time
Retro-compatibility (3.10, windows-latest, 232)	16m 55s
Retro-compatibility (3.10, windows-latest, 231)	7m 16s
Retro-compatibility (3.10, windows-latest, 222)	5m 7s
Retro-compatibility (3.10, windows-latest, 221)	5m 36s
Retro-compatibility (3.10, ubuntu-latest, 232)	11m 36s
Retro-compatibility (3.10, ubuntu-latest, 231)	4m 57s
Retro-compatibility (3.10, ubuntu-latest, 222)	3m 58s
Retro-compatibility (3.10, ubuntu-latest, 221)	3m 20s
debug	1s
tests (3.7, windows-latest)	26m 17s
tests (3.7, ubuntu-latest)	38m 24s
tests (3.8, windows-latest)	25m 36s
tests (3.8, ubuntu-latest)	10m 38s
tests (3.9, windows-latest)	22m 33s
tests (3.9, ubuntu-latest)	9m 40s
tests (3.10, windows-latest)	24m 49s
tests (3.10, ubuntu-latest)	11m 9s
Style Check	56s
docs / Documentation	9m 51s
examples / Setup	2s
docs / Check doc style / Documentation Style Check	1m 3s
examples / Run Examples (3.10, windows-latest)	13m 52s
examples / Run Examples (3.10, ubuntu-latest)	6m 16s
upload-development-docs	0s
	4h 19m 52s

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