Version 2.6.0 Feature Release

The main feature introduced in this release is support for web based applications. You can now create applications that run in a browser, and display a simulated terminal emulator in the browser. The initial implementation of this capability was supplied by @Ahoys123 -- thank you! (We made some follow up bug fixes and improvements.)

More detail about this mode can be found in the README-wasm.md file.

Additionally we added support for alacritty-direct, which was contributed by @moson-mo.

This version is only tested on go 1.18 and newer. Older versions of go may work, but might also fail, as our dependencies have started using newer compilation flags.