Merge release 0.19.2 into 0.20.x#454

glensc merged 5 commits into

0.20.xperftools/xhgui:0.20.xfrom

0.19.x-merge-up-into-0.20.x_uuDeYiMWperftools/xhgui:0.19.x-merge-up-into-0.20.x_uuDeYiMWCopy head branch name to clipboard