remove ::none() from the Repository interface as it is always the neg… #76

Job	Run time
BlackBox (ubuntu-latest, 8.2, lowest)	3m 14s
Coverage (ubuntu-latest, 8.2, lowest)	38s
BlackBox (ubuntu-latest, 8.2, highest)	2m 39s
CS (8.2)	31s
Psalm (8.2, lowest)	19s
Coverage (ubuntu-latest, 8.2, highest)	39s
BlackBox (ubuntu-latest, 8.3, lowest)	3m 1s
Psalm (8.2, highest)	32s
Coverage (ubuntu-latest, 8.3, lowest)	41s
BlackBox (ubuntu-latest, 8.3, highest)	3m 4s
Psalm (8.3, lowest)	30s
Coverage (ubuntu-latest, 8.3, highest)	43s
Psalm (8.3, highest)	27s
	16m 58s

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