Added boiler-plate impulse code and gmwb.
Merge branch 'master' into gmwb
Added multiple levels of refinement to GMWB.
Merge branch 'master' into gmwb
Updated to (Non)Controllable.
Merge branch 'master' into gmwb
Control discretization now has the same number of nodes under the contract withdrawal amount and above it.
Better control node discretization.
Merge branch 'master' into gmwb
Merge branch 'master' into gmwb
Added comment with exact nonwithdrawal solution.
Started working on explicit GMWB formulation.
Minor changes to explicit constraint code.
Rannacher and higher order BDFs are no longer reset after an event occurs.
Higher order BDFs are reset; Rannacher is not.
Minor changes to structure of implicit GMWB formulation.
Doubly-linked lists are now used for nodes to end in the proper order.
Continued work on GMWB.
Changed control structure.
Added TODO list.