Examine cyclic dep

[oubiwann]

• Is lanes really necessary?
• What's being done there?
• Is the code generally useful?
• Can/should it be moved someplace mutually useful by lanes and barista?
• Can/should it be moved into the lanes-barista module?

[oubiwann]

We can break the cyclic dep by moving the shared code into a new project:

• https://github.com/lfex/yuri

[oubiwann]

Done -- yuri is released and barista is using it.