[winswitch] [ANNOUNCE] xpra-html5 v18

[Antoine Martin]

Hi,

This update to the HTML5 client fixes many issues and improves 
compatibility with all xpra server versions.
Many critical bugs were fixed in the offscreen decoder which should 
finally allow it to work reliably.

Updating is strongly recommended.

For more details, please see:
https://github.com/Xpra-org/xpra-html5/releases/tag/v18

Cheers,
Antoine