[Doc] Added license, updated Readme and added Changelog file

[Pierstoval]

Ping @impress/mergers for review

[Pierstoval]

@bartaz I made fb0f882 to fix your comments. Could you reply only in the PR ("Files changed" tab, and not the commit itself) to keep the diff/notes up to date to your needs? :)

[bartaz]

@Pierstoval sure, I wasn't aware that these comments are not shared across commit and files changed pages. They still appear there in PR thread.

[bartaz]

Thanks for all the fixes. Still, make clear that license is MIT in readme, so people don't need to look into license file just to know that. So make it Released under the MIT [License](LICENSE). - note the typo in file name.

[Pierstoval]

Fixed in a33f2ec !

[FagnerMartinsBrack]

The good thing in comment on the "Files Changed" tab is that Github shows a part of the snippet and all comments below it in the timeline

[Pierstoval]

The good thing in comment on the "Files Changed" tab is that Github shows a part of the snippet and all comments below it in the timeline

And when a line of code is changed, the note appears as outdated diff instead of a global note 😉