removefb_instant tag from game.project, we don't use it anymore;
reset .html shell to default in game.project, HTML5 section, because now we merge everything that we need for the FBInstant native extension using Manifest Merging Tool (if you added something custom, just copy-paste default template and add your custom things);
read the manual about game.project settings, HTML5 section and about build for the HTML5 platform in general.
Breaking changes for user:
fb_instanttag fromgame.project, we don't use it anymore;.html shellto default ingame.project, HTML5 section, because now we merge everything that we need for the FBInstant native extension using Manifest Merging Tool (if you added something custom, just copy-paste default template and add your custom things);game.projectsettings, HTML5 section and about build for the HTML5 platform in general.