Move MultiChooser#chooseNone to BaseChooser#chooseNone.

[brian-mann]

Move MultiChooser#chooseNone to BaseChooser#chooseNone.

[brian-mann]

Good point. I think perhaps instead of mixing these API's - and dealing with the consequences of SingleChooser having a chooseNone but not a chooseAll - I think I should make .unchoose() not require passing in a model.

Calling unchoose without any arguments should automatically unchoose the chosen model. It get's a little hairy dealing with the options argument, but I can build the unchoose API to accept either a model to unchoose, or no model at all, and an options argument regardless.

Would that suffice your use case?

[jgornick]

The method overloading option is cool.

However, personally I've tried to move away from that and create explicit methods. With that being said, a cleaner option I think would be to rename chooseNone to clearChosen. That naming pattern follows other methods like getChosen.