Bug Fix

So when we nogap! something we need to make sure that the suff stats get
updated appropriately. Again, doing things the right way slows things down

elapsed time: 14.934415303 seconds (364240 bytes allocated)
elapsed time: 2.672927709 seconds (81792 bytes allocated)
elapsed time: 1.635934729 seconds (66912 bytes allocated)
elapsed time: 1.304072793 seconds (61408 bytes allocated)
elapsed time: 1.228082497 seconds (58080 bytes allocated)
elapsed time: 1.205998174 seconds (57888 bytes allocated)
elapsed time: 1.12348153 seconds (54560 bytes allocated)
elapsed time: 1.128168615 seconds (54560 bytes allocated)
elapsed time: 1.127754318 seconds (54560 bytes allocated)
elapsed time: 1.119744986 seconds (54560 bytes allocated)
Added convenience function for lPosterior