Edouard Tisserant [Thu, 07 Nov 2019 16:40:48 +0100] rev 2812
SVGHMI: various fixes to make SVGHMI behave on more versions of twisted and GCC.
Edouard Tisserant [Wed, 30 Oct 2019 15:17:05 +0100] rev 2811
SVGHMI - prepare page with cached data when switching. This prevents values that do not change and that was already subscribed in previous page from keeping undefined.