Alpha 11a - Minor fixes

~ Put a dummy skybox in
~ fixed signal colliding with wall
~ fixed junction not having correct initial setup

Alpha 11 - Extension

+ Added more track (over doubled in running length)
~ Turnouts are propped (enjoy smoother rides!)

Alpha 10 - Larger Terminus Layout

+ New London depot Scene
+ Terminus now has 3 bay platforms, all can run around. (Plus 1 through platform)
+ Added magic to the hump
~ Fixed broken double slip
~ Cranes turn to random angles now, not just at random times

Alpha 9a - Fixed missing visibility optimization

Alpha 9 - New Terminus Layout

+ More Underground section
~ Terminus layout reworked

Alpha 8 - Extensions

+ Viaduct Scene
+ Passing Loop Scene
+ Testing proppered track
~ Optimised hump yard layout further
~ Added retaining walls to suburban station
~ Cranes move now

Alpha 7 - Port

+ Port Scene
+ Tunnel Mouths
+ Signal box at hump yard
~ Animated Levers instead of func_brush
~ Multi-way points are now binary in operation and will automatically decduce which piece to use if multiple are visible.
~ Improved Logic at teminus (Semaphores work there)

Alpha 6 - Semaphores

Alpha 5a - Auto Reset

+ Added auto-resets when joining and leaving the main line
~ Fixed right hand points still being glitched

Alpha 5 - Reversing Loop

+ Reversing loop
+ Second island station
+ Placeholder signals
+ Turntable at terminus
+ Added buildings to local station
~ Fixed derail glitch with type 2 points
~ Potential fix for not being able to paste things on the build area track
~ Changed terminus routing logic
~ Fixed terminus roof in wrong place
~ Made some lightmaps larger
~ Improved hump yard
- Removed simple end of line