[Don't Merge] Bump version #2127

Job	Run time
test (InterfaceI, 1)	23m 8s
test (InterfaceI, 1.6)	28m 24s
test (InterfaceII, 1)	27m 26s
test (InterfaceII, 1.6)	36m 31s
test (InterfaceIII, 1)	14m 7s
test (InterfaceIII, 1.6)	22m 26s
test (Integrators_I, 1)	19m 12s
test (Integrators_I, 1.6)	21m 35s
test (AlgConvergence_I, 1)	30m 25s
test (AlgConvergence_I, 1.6)	36m 4s
test (AlgConvergence_II, 1)	23m 0s
test (AlgConvergence_II, 1.6)	30m 4s
test (AlgConvergence_III, 1)	27m 8s
test (AlgConvergence_III, 1.6)	35m 27s
test (Downstream, 1)	19m 18s
test (Downstream, 1.6)	22m 57s
test (ODEInterfaceRegression, 1)	18m 13s
test (ODEInterfaceRegression, 1.6)	17m 48s
test (Multithreading, 1)	14m 5s
test (Multithreading, 1.6)	19m 18s
	8h 6m 36s

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