It looks like `--irrindexcold` doesn't make sense if this `--h2rcold` will be used. Should we remove `--irrindexcold` and generalise `--h2rcold` somehow? See hombit/mercury#30
It looks like
--irrindexcolddoesn't make sense if this--h2rcoldwill be used. Should we remove--irrindexcoldand generalise--h2rcoldsomehow?See hombit/mercury#30