documentation docs gplv3 blackberry markdown-language gpl3 research-day markdown-lang seanpm2001-docs seanpm2001-documentation blueberryos blueberryos-project blueberryos-development blueberryos-operating-system-project blackberryos blueberryos-docs blueberryos-documentation black-and-blue black-and-blue-friday development-day