Add Lobatto IIIa-c and Radau IIa solvers #65

Job	Run time
Tests (MIRK) / Tests - MIRK	35m 55s
Tests (FIRK(EXPANDED)) / Tests - FIRK(EXPANDED)	56m 26s
Tests (FIRK(NESTED)) / Tests - FIRK(NESTED)	1h 0m 56s
Tests (MISC) / Tests - MISC	12m 59s
Tests (SHOOTING) / Tests - SHOOTING	14m 22s
Tests (WRAPPERS) / Tests - WRAPPERS	6m 18s
	3h 6m 56s

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