As detailed in this post, Majiir has handed me the reins for looking after Kethane, particularly putting the geodesic grid code under the BSD licence and sub-licensing the models to me so I may distribute them with Kethane.
Download: Kethane 0.11.0
As of Kethane 0.10.0, background scanning is supported:
NOTE: As always, ElectricCharge is a concern. Stock RTGs (or anything that uses ModuleGenerator and produces only ElectricCharge without consuming any resources) and stock so