Tests

Add @no_infer flag for turning off species/variable/parameter inferring #120

Job	Run time
Tests (1, Core) / Tests - Core	25m 26s
Tests (1, Spatial) / Tests - Spatial	11m 20s
Tests (1, IO) / Tests - IO	9m 44s
Tests (1, Extensions) / Tests - Extensions	22m 28s
Tests (lts, Core) / Tests - Core	20m 36s
Tests (lts, Extensions) / Tests - Extensions	13m 34s
Tests (lts, IO) / Tests - IO	4m 21s
Tests (lts, Spatial) / Tests - Spatial	8m 52s
Tests (pre, Core) / Tests - Core	26m 4s
Tests (pre, Extensions) / Tests - Extensions	22m 19s
Tests (pre, IO) / Tests - IO	8m 4s
Tests (pre, Spatial) / Tests - Spatial	11m 35s
	3h 4m 23s

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