OndrejSladky/kmercamel: v2.2.1

lowerbound now supports same flags as greedy: -z for k-mer filtering, -S for computation from simplitgs; as with greedy, if there are too many simplitigs, lowerbound is computed from k-mers directly; flag -u for lowerbound was fixed names of algorithms were changed to be better understandable; the change is backwards compatible, the old names still work