Tests

Add API functions for the other kinds of matrixes that a CRN ODE system can be factored into #168

Job	Run time
Tests (1, IO) / Tests - IO	3m 33s
Tests (1, Core) / Tests - Core	19m 59s
Tests (1, Extensions) / Tests - Extensions	14m 29s
Tests (1, Spatial) / Tests - Spatial	5m 26s
Tests (lts, Core) / Tests - Core	22m 3s
Tests (lts, Extensions) / Tests - Extensions	14m 24s
Tests (lts, IO) / Tests - IO	6m 16s
Tests (lts, Spatial) / Tests - Spatial	10m 44s
Tests (pre, Core) / Tests - Core	19m 53s
Tests (pre, IO) / Tests - IO	1m 21s
Tests (pre, Extensions) / Tests - Extensions	14m 43s
Tests (pre, Spatial) / Tests - Spatial	5m 34s
	2h 18m 25s

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