Tests

refactor: Deprecate array formats and default to dataframe #1243

Job	Run time
(ubuntu-latest, Py3.9, sk1.5.*, sk-only:true)	22m 2s
(ubuntu-latest, Py3.9, sk1.2.*, sk-only:true)	26m 17s
(windows-latest, Py3.8, sk0.24.*, sk-only:false)	35m 51s
(ubuntu-latest, Py3.9, sk1.0.*, sk-only:true)	23m 3s
(ubuntu-latest, Py3.8, sk0.23.1, sk-only:true)	28m 5s
(ubuntu-latest, Py3.9, sk1.3.*, sk-only:true)	21m 56s
(ubuntu-latest, Py3.9, sk0.24, sk-only:true)	21m 57s
(ubuntu-latest, Py3.8, sk0.23.1, sk-only:false)	6h 0m 20s
(ubuntu-latest, Py3.9, sk1.1.*, sk-only:true)	31m 5s
(ubuntu-latest, Py3.9, sk1.4.*, sk-only:true)	30m 55s
(ubuntu-latest, Py3.9, sk1.0.*, sk-only:true)	7m 13s
(ubuntu-latest, Py3.9, sk1.3.*, sk-only:true)	5m 25s
(ubuntu-latest, Py3.9, sk0.24, sk-only:true)	6m 56s
(ubuntu-latest, Py3.9, sk1.1.*, sk-only:true)	6m 38s
(ubuntu-latest, Py3.9, sk1.2.*, sk-only:true)	6m 41s
(ubuntu-latest, Py3.8, sk0.23.1, sk-only:true)	6m 32s
(ubuntu-latest, Py3.9, sk1.5.*, sk-only:true)	5m 38s
(ubuntu-latest, Py3.8, sk0.23.1, sk-only:false)	11m 20s
(ubuntu-latest, Py3.9, sk1.4.*, sk-only:true)	6m 22s
(windows-latest, Py3.8, sk0.24.*, sk-only:false)	11m 58s
	11h 16m 14s

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