Added Change History

Hi @SBoudrias thanks for the new release!

I thought it would be nice to maintain a small "Change History" section. I just added a few details from what I know. It should not be a burden for you to maintain. Just a few bullet points for each release you do. See for example the change history of some of my projects [here](https://github.com/analog-nico/assumejs#change-history) and [here](https://github.com/tyabonil/request-promise#change-history).