Update Edge 12 release date

[foolip]

This date has a special significance for Baseline: https://github.com/web-platform-dx/web-features/issues/623

July 29 is claimed as the release date by Wikipedia: https://en.wikipedia.org/wiki/Microsoft_Edge

[foolip]

@captainbrosset can you shed some light on what the correct date is? If it's wrong I just want to fix it ASAP before web-features consumers start to treat it as special.

[captainbrosset]

@captainbrosset can you shed some light on what the correct date is? If it's wrong I just want to fix it ASAP before web-features consumers start to treat it as special.

Edge 12 would be the same as the public release date for Windows 10, so July 29, 2015. https://www.theverge.com/2015/7/29/9066255/microsoft-windows-edge-browser-review https://blogs.windows.com/windowsexperience/2015/06/01/hello-world-windows-10-available-on-july-29/

[foolip]

Thanks for confirming @captainbrosset!