RFC and Voting

## RFC and voting
* These are big Pull Request or contributions that changes important behavior.
* RFCs will be tagged with the *PR: RFC* label
* A vote will be held once the RFC is ready. All users can vote commenting on the Pull Request
* Comments MUST use Yes or No to signify the vote, on the FIRST sentence, except they don't want it to be counted.
* If your comment is a voting comment, specify the reason of your vote or it won't be counted.
* After voting has been closed, no further votes will be counted.
* An RFC will be rejected if less than 50% + 1 (simple majority) has voted Yes.
* If the RFC is approved, Team Members have the final word on its implementation or rejection.
* RFCs with complex voting options will specify the vote percentage or other details.

After this is decided to be merged, a new label will be created, *PR: RFC*