reorg of organisms, int orgs tests pass
integer orgs successfully moved
more restructuring of bitstring
restructured bitstring finished
completed revised tests for nk model org
revised rna finished
removed unneeded code
increased test coverage
added coverage pragmas
pep8 compliant
reordered imports for abstract org
deleted line from int org
improved doc of run_config
pep8 compliant
Merge remote-tracking branch 'josh/master'