Changes a bunch of vanilla buildings to require alternative power sources:

• Burner: All inserters, pump, lab, assembler mk1
• Steam: Pumpjack, assembler mk2, chemical plant, oil refinery
• Heat: Electric mining drill, electric furnace, assembler mk3, centrifuge, rocket silo

Everything else (such as lamps, roboports, laser turrets) still require electricity, as well as any mod-added buildings (except inserters - those will change to burner).

Also moves heat pipes to steel processing and adds the space age heating tower there, with both being substantially cheaper.

Burner leeching strongly recommended.