Fluidbox Symetry

[KiwiHawk]

https://factorio.com/blog/post/fff-394

In Factorio 2.0, machines will natively be flippable if they have a line of symmetry. The following machines currently do not:

• Flare Stack
• Washing Plant
• Leaching Plant
• Casting Machine
• Induction Furnace
• Hydro Plant
• Salination Plant
• Thermal Water Bore
• Thermal Water Extractor

I think it's fine to leave the Thermal Water Bore / Extractor as their positions are constrained by the locations of Fissures. Player's aren't likely to be flipping blueprints of this. Similar to the base game Pumpjack; keep an eye on what changes are made to this, if any.

Sea Block modifies Washing plants, adding an additional output fluid box in the middle of the blank side