Changelog: propulsion tech update

It took way longer than I expected to implement, but the core technologies for propulsion are now available in Astral Divide!

Next, I will work on the story and adding more content to explore in the game, so it may take a while until the next update.

Gameplay changes

• Added the item stand, which can display one item and automate the vacuum gun

• Added the switch, which allows to manually route the power to the left or the right of it

• It is now impossible to build multiple interact-able objects in the same tile

• All items, including the tools and blueprints, can now be moved and dropped

• Added a maximum linear and angular velocity impulse when throwing too much mass at once.

• The iron ores are now magnetic again

Quality of life improvements

• Items can now be manually looted by pressing E (by default)

• Items can now be directly retrieved from crates by pressing E (by default)

• Looting an item now adds it into an existing stack (if any), instead of always being added to the toolbar

• The quantity of items in the stack is now shown along with the item being selected with the mouse

Bug fixes

• Fixed camera "jumping" when moving between ships in orbit

• Fixed a bug where the player was drifting horizontally after moving to another ship

• Fixed inability to use the magnet to another ship/planet

• Fixed the X-Ray of the smart laser that was invisible in other worlds/ships

• Fixed a rare crash during the undocking procedure

• Fixed rare power transmissiog inconsistencies in the gear mechanisms

• Fixed inconsistency in the visual style of the iron gears

Performance improvements

• Reduced memory usage of the world's data

• Improved the time required to load and save the game

• Improved the performance of math operations (overall CPU usage)

Trivia

• The vacuum gun design now shows a gear to hint about it's automate-ability

• The star is now at the origin ([0, 0] coordinates) instead of the first planet

• Added developer commands to get specific items

• Lots of code refactoring and insuring future maintainability

(version 2b321716)