SeafloorGrid file_collection changes (#109) #487

Job	Run time
Test Python 3.8 on ubuntu-latest	7m 53s
Test Python 3.9 on ubuntu-latest	7m 23s
Test Python 3.10 on ubuntu-latest	5m 34s
Test Python 3.11 on ubuntu-latest	5m 35s
Test Python 3.8 on macos-latest	10m 36s
Test Python 3.9 on macos-latest	10m 29s
Test Python 3.10 on macos-latest	8m 49s
Test Python 3.11 on macos-latest	9m 23s
Test Python 3.8 on windows-latest	14m 27s
Test Python 3.9 on windows-latest	13m 59s
Test Python 3.10 on windows-latest	14m 25s
Test Python 3.11 on windows-latest	14m 36s
	2h 3m 9s

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