Feature request: Include change log right in GammaLauncher

[berkut0]

As you have to read the changelog each time you install the preview, it seems very useful to know the changes without having to refresh the TeamCity page. It's not mandatory, but it can be very useful.

[sebescudie]

Hey. Thanks for the suggestion. Indeed, kinda boring that you have to switch to your web browser, login as guest on TeamCity... But in its current form, I don't see where I would display those in the UI. I have plans for a UI rework, but this will come later. And when getting there, the changelog could indeed show up in the UI :)