fixed access from protected parameter's geno object from candidate class
added difficult functio to test pool, ref #68
added control of upper bound when computing natural gradient, ref #47
fixed bug when computing natural gradient with geno/pheno type, ref #47
cleanup to cmasolutions.cc
added API call is_sep() to parameters
fixed bug in check of tolX stopping criteria when using sep algorithm
moved convenience function set_str_algo from parameters to cmaparameters in order to set 'sep' flag while setting the algorithm
fixed bug in check of tolX stopping criteria when using sep algorithm
Merge branch 'dev'
toward 0.9.1
support for external activation control of stopping criteria, ref #74
Merge branch 'dev' into minos

Conflicts:
	src/genopheno.h
added non-ref boundary object accessor from genopheno