Replace last message

[zimme]

It would be awesome to replace the last message or maybe to add a parameter to the clear command to clear only the n number of messages.

I need this for download indication in my version of the composer package, which will hopefully replace the current one.

Right now i check if the message starts with downloading: and if so I just clear but that clears everything, when I really just need to replace the previous message if that also contains downloading:

[zimme]

I'm thinking .slice(-n).remove() for body and .splice(-n,n) for messages if you add index to clear function