Possible to edit sent messages?

In my years of using Skype, I've noticed one thing it does that none of the other comparable chat programs does: It allows you to edit or delete past messages. I was wondering if this would be possible to include in Tox-Core, or would be a good idea.I personally use it for fixing grammar mistakes, but it does make for a handy chat feature, and the ability to delete messages has saved me from a few potential slipups. Thank you for your consideration.