Guess I missed this somewhere, but... How do you transfer colonists from one (perhaps crowded world) to one that could, apparently, use some extra people?
Population cannot be transfered from one colony to another. POP migration is a concept we'll possibly explore in one of the expansions. It will probably be more about population slowly migrating from one place to another instead of actually picking a POP from one colony and putting it on another. To boost POP in new colonies you can allocate production to Habitat Control, put a Support Ship in orbit, build a Cloning Facility or research POP growth techs.
Oh. Thanks for the quick response and the ideas for POP growth. The game just keeps getting better and better. Keep up the good work!