WIP: Fix/sequential buckleylev mcworther analytical sol
Reopening of !2608 (merged) which has been reverted in !2627 (merged) due to bug #1034 (closed). Should be revisited preferably in the light of #869 (closed) and !2629 (closed) !2628 (closed)
Reopening of !2608 (merged) which has been reverted in !2627 (merged) due to bug #1034 (closed). Should be revisited preferably in the light of #869 (closed) and !2629 (closed) !2628 (closed)