NB. In some cases we go from a more complex image() to a single icon_state string and I assume this works for every case but do not care to check because of the sheer scale of extra fiddly effort. Buyer beware, not my code.
* Refactor holomap generation
* Portable mapping units
* Fix misnamed state
* Make it small
* Reduce power usage
I didn't know you could use fractional amounts!
* Apply suggested changes, fix indent
* Fix icon_state bug