Changes

Iron Engines now accept liquids via right click.
 (commit: 6dd4287)

Power Pipe rework

Explosions are gone, loss over distance is gone.

Added two new Power pipes, Cobble and Diamond.

All pipes have much smaller max throughput:
Cobble = 8 MJ/t
Stone = 16 MJ/t
Gold = 64 MJ/t
Diamond = 256 MJ/t

The power display will turn red if a pipe has hit its max capacity. You
can use smaller pipes to throttle certain parts of your power net.

Machines are more lossy now to make up for the lossless pipes. Expect
low power draws even when idle.

Also added on/off Gate action support to lasers and ACTs.
 (commit: 8f7292e)

Immibis' Filler changes

Closes #838
 (commit: ff0e36a)