provide default values for nbins and npts for LatticeSolver and BuckshotSolver


git-svn-id: svn+ssh://svn.mystic.cacr.caltech.edu/mystic/mystic@773 968178ea-60bd-409e-af13-df8a517b6005
ticking up versions for dill depends


git-svn-id: svn+ssh://svn.mystic.cacr.caltech.edu/mystic/mystic@774 968178ea-60bd-409e-af13-df8a517b6005
Merge branch 'master' of https://github.com/uqfoundation/mystic