Biplanes Mod

-fixed crash involving improper item dimension-spawning preferences
-made structural blocks and slabs placeable on biplanes
-improved item rendering
-expanded max plane size (might've been this one, might've been the last one)
-improved custom 3D item rendering
-added 3D item rendering for Biplane Seat (it seems to be hard to find without one)

-improved how engine force is fed into the movement class
-added more engine items to test this
-made it possible for engines to be coded to render with less combustion cylinders
-made rotor blade # affect the force produced by the engines

-fixed a bug caused by the expansion of the plane size (if you make your entities sizes variable based, don't base your rendering off of static values)
-did a similar thing again
-...and again
-...and again
(yeesh, I should really have used values based off of the variables before)
-made ailerons work more realistically in the current somewhat-broken physics

-put a limit on the amount of lift a plane can produce (no more planes flying straight up the moment the engine is turned on)

-made yaw when on the ground scale better

-fixed the rendering bug where the biplane was warping into the ground when you tried to lift off without enough speed

-made modifications to the example planes to make them perform better

-changed some item names and added descriptive info on engine items, ailerons are still ailerons because... I said so... I suppose

-found hilariously false title paragraph on another website:
http://mcmoddatabase.com/bi-planes-mod-download/#more-5723

-awesome (I think, I don't understand all that much of french) video by Furius Jumper:
https://www.youtube.com/watch?v=XaOfhHWrGBk