Tests

Improvements to graph plotting #191

Job	Run time
Tests (1, Extensions) / Tests - Extensions	17m 12s
Tests (1, IO) / Tests - IO	6m 37s
Tests (1, Core) / Tests - Core	23m 0s
Tests (1, Spatial) / Tests - Spatial	8m 40s
Tests (lts, Core) / Tests - Core	22m 39s
Tests (lts, Extensions) / Tests - Extensions	14m 26s
Tests (lts, IO) / Tests - IO	6m 30s
Tests (lts, Spatial) / Tests - Spatial	10m 53s
Tests (pre, Core) / Tests - Core	22m 45s
Tests (pre, Extensions) / Tests - Extensions	17m 48s
Tests (pre, IO) / Tests - IO	4m 24s
Tests (pre, Spatial) / Tests - Spatial	8m 48s
	2h 43m 42s

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