ENH: move chunks of code to their own package

[CJ-Wright]

Would it be possible to move some things to their own package? (Looking at your temperature controller). This way a) we can remove some of their ipython dependence, b) other interested parties could use them, c) package them like usual with all the goodness that comes with tests, CI, and coverage, d) hot swap them for their simulated counterparts.
The idea would be to just leave the ipython things as setting up the session namespace rather than doing the heavy lifting of the actual code.