Blender Gun, Blueprint, and Ship Inventory improvements! Also: Black Powder!

This update adds a lot of long-asked for quality-of-life improvements!

• Blender Gun now respects "islands" of cells separated by static pixels - blending across a wall will not throw things outside of your forge, and you won't accidentally mix your fuel into the chamber!

• Blueprints can now be flipped in X and Y dimension by pressing 'b' and 'n'

• Blueprints are now free to place if you have the [c]free[/c] cheat on, or if you are in Creative Mode

• Spaceship Inventory slots have a "Hold" button on them (hand icon) - when set, those materials will not be moved to the ship on pressing Transfer All

• The Spaceship Inventory "Hold" settings are stored in your profile so they will save & restore

• Black Powder can be created from the combination of Charcoal, Potassium Nitrate, and Sulfur - this is an explosive that must be sparked, less powerful than Nitro but still pretty powerful :)

• Some Hypochlorous Acid reactions are added so Hypochlorous Acid is no longer a dead-end

• Buttons and Switches are now not triggered by liquids and gases hitting them (only solids)

• The transition height for the background from the surface to limestone caves is moved down slightly, to prevent situation where people stand in an emptied lake and the background changes too early

• BALANCE: made the price of the Guide Tab 16 Wood and 16 Carbon so people can get it earlier

• BALANCE: made the price of the Walk-Through-Walls Boots Ectoplasm + Titanium so they can get it in biome 3

Also, these are from a hotfix update earlier, but in case you didn't see the update to the last post:

• Z + Mousewheel for the added zoom shortcut so it doesn't conflict with row-changing hotkey

• BUGFIX: single width lines of pump wouldn't pump liquids that were stagnant because pixels of the same liquid or gas material would swap with each other and not simulate more the same frame - now we don't both swapping same substance materials and single-width pumps work again

• BUGFIX: put in something to prevent a bug where segments of the world would save as all sand - not sure what causes this yet but now, for safety's sake, the system will not save segments if they appear as all sand index (all zeroes) because this is almost certainly unintended

[p align="start"] Some new hotfixes added Wednesday morning (build: 07.29d):

• [p align="start"]BUGFIX: fixed bug with reaction lookup in non-English languages in the Guide Tab that was blocking Ammonium Paratungstate (and probably others) from showing their reactions

• [p align="start"]BUGFIX: non-match filter pixels should no longer be "sticky" with materials above them

• [p align="start"]BUGFIX: non-match filter pixels operate properly with Conveyor Belts and Pumps adjacent

[p align="start"]We're making really fast progress now on a number of things, so more fixes and improvements coming soon! Let me know any feedback you have either here in the forums or in the Discord community!

[p align="start"]And by the way, thank you to everyone reviewing the game!