Fixed invisible rollercoasters.

Fixed error when wheel'd nodes are very close to eachother

small error fix my bad

Fixed wheel crash! (hopefully)

- Fixed coasters drawing in the sky

+Added launch track. Bind a key to a launch track and set speeds of launches.

WOOPS

-Drastically improved performance of speedup/break wheels
-Node creator ghost node is the same model as the actual node
-Pressing E on the track or cart will enter you into the nearest available cart
-If several homestations are next to eachother, carts will stop at the farthest node
-Fixed some bugs/errors.

-Fixed certain materials not being downloaded
-Fixed cart "minimum speed" not working

-Duplicator support!!!! They can be saved and copied, just like any other thing

-Fixed coasters building indefinitely

-Tracks will build the mesh as soon as it hits the maximum vertex limit, default 50000. This means the mesh itself doesn't wait until all the points are plotted, and will fix some crashing issues with them all being created the same frame

-Option to have in-progress coaster meshes be drawn

-Added 'blank' track type

-Fixed some potential compatibility issues with coaster_node:SetType (Now is SetNodeType)

-Fixed some potential compatibility issues with seats

-Track list will automatically unslide while generating (hopefully people will see it now)

-Permission checks before a user can modify a node (checks if they're the owner, they're an admin, or the hook 'Coaster_ShouldModifyNode' returns true)

-Renamed some convars!
----Added: coaster_physmesh_resolution (1-1000) (Serverside)
----Added: coaster_mesh_maxvertices
----Added: coaster_mesh_drawoutdatedmesh
----Added: coaster_mesh_drawunfinishedmesh
----Modified: coaster_previews -> coaster_mesh_previews
----Modified: coaster_autobuild -> coaster_mesh_autobuild
----Modified: coaster_resolution -> coaster_mesh_resolution
----Modified: coaster_stepspercycle -> coaster_mesh_stepspercycle

-Added SOME options to the top menu bar (other stuff requires a bit more than a boolean value)

-Added hook "Coaster_ShouldCreateNode" to let people have more control over coaster node creation

-Some cart fixes

-General bug fixes