Ability to use mutable paper-chips without input

[bjornharrtell]

In some cases it is useful to be able to programmatically create chip(s) and allowing the user to remove them but without enabling them as input fields (i.e disallowing the user to create chips). I'd like to add this as an optional feature, does this sound like a good idea?

[miguelcobain]

@bjornharrtell isn't this the requireMatch=true variant of the chips?
When that argument is true, paper-chips won't add new items and will require the user to select an item from the dropdown list of options.