[winswitch] [ANNOUNCE] xpra-html5 v6.0

[Antoine Martin]

Hi,

xpra-html5 version 6.0 is now available.
Although there is only a small number of items in the release notes:
https://github.com/Xpra-org/xpra-html5/releases/tag/v6.0
the codebase has been significantly modernized and the html5 client 
should be faster than ever before.
Many thanks to all the contributors.

Please note that this release is not compatible with versions of the 
server older than the 4.3.x series, those who need compatibility with 
outdated server versions should also stick with an outdated version of 
the html5 client.

Cheers
Antoine