first draft for release 0.41 update notifications

@peterflynn @redmunds @dangoor @RaymondLim @njx @JeffryBooher @pthiess Is there more that needs to be mentioned for this release? Thank you.
There's nothing hardcoded (any more). Just make sure the GitHub download URL is like `https://github.com/adobe/brackets/releases/download/release-0.41/Brackets.Release.0.41.msi`.
If that doesn't fit, we can make the [website code](https://github.com/adobe/brackets.io/blob/gh-pages/index.html#L415) fit, too.