HOWTO: decompress WOFF2 fonts

Once upon a time you can stumble upon a WOFF2 font file; it's in WOFF 2.0 format, an improved version of Web Open Font Format.
And it's quite easy to unpack such compressed files to get the usual TTF (and maybe OTF) fonts -- just use the woff2_decompress utility from the woff2 Google project on GitHub:

$ woff2_decompress myfont.woff2

(please note: you need to compile that project before use, and it's much easier to do in GNU/Linux and other Unix-like environments, than in MS Windows).