1.9.11.4 "Eleven Plus Four"

It's another release; this one brings the default Gradle version up to 6.7, which was released today. Since this Gradle version is so new, there may be unforeseen bugs, but using 6.7 allows users to build Liftoff-generated projects even if they only have Java 15 installed. I've already seen the frustration of a developer who had installed the latest Java a few weeks ago, and was told he had to install a lower version because the latest was, at that point, not the greatest. Now we shouldn't have to downgrade Java just to build a project. Java 15 also has some nice improvements of its own, which projects can use with the lwjgl3 (or desktop) platforms. There's other improvements here, too. The HTML project has a distZip task that removes the recompile button from the output of dist and puts it in a .zip file. There's a few fixes and updates to third-party extensions. Generated projects default to using the daemon now, and need less max memory.