Tests

Add Lobatto IIIa-c and Radau IIa solvers #68

Job	Run time
Tests (FIRK(EXPANDED)) / Tests - FIRK(EXPANDED)	5h 2m 54s
Tests (MISC) / Tests - MISC	15m 29s
Tests (FIRK(NESTED)) / Tests - FIRK(NESTED)	52m 46s
Tests (MIRK) / Tests - MIRK	38m 6s
Tests (SHOOTING) / Tests - SHOOTING	16m 40s
Tests (WRAPPERS) / Tests - WRAPPERS	8m 40s
	7h 14m 35s

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