Add ability to include swift versions #69

Job	Run time
Soundness / API breakage check	0s
Soundness / Documentation check	40s
Soundness / Format check	0s
Soundness / Broken symlinks check	2s
Soundness / License headers check	3s
Soundness / Python lint check	6s
Soundness / Shell check	32s
Soundness / Unacceptable language check	4s
Soundness / YAML lint check	3s
	1m 30s

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