bugs/250bpm.com.md

Broken link from

http://250bpm.com/

current leads to ribosome.ch, which is now a shop, rather than to

http://sustrik.github.io/ribosome/

which I infer based on authorship and style is the intended target.

Typo in

http://250bpm.com/blog:93

dept instead of the probably-intended debt.