slicot dplesolver bug: reduced complexity of fdw/adj mode
snopt stats: iter_count was off by one
SQPMethod: added bfgs monitor
NlpSolver option to make evaluation errors fatal
slicot dplesolver: adding timing stats
slicot dplesolver bug: infinite loop for some cases
slicot dplesolver: annotated with complexity
slicot dplesolver: added option to choose numerical zero