export/import for moving between machines (and cub clean?)

[ongardie]

The scenario is: I have a cubicle on one machine and want to move it to another (such as desktop to laptop or vice versa).

The process now is to copy ~/.local/share/cubicle/work/$env/ and probably some cub reset.

A downside of this is that it doesn't typically make sense to copy over cache directories. Maybe a thorough rsync or tar invocation could solve that.

Related to #29 and the comment there:

And then that opens the question of whether you'd want to be able to do a "harder" reset without this stuff, or without some of this stuff.

In other words, maybe an environment-level "clean" command to retain only the valuable parts of the working directory would be useful.