New Features

I have added a few shortcuts to speed up unit setup and manipulation. Here is the list:
L - Line of Sight
R - Rotate Unit
M - Move unit
N - Toggle Show/Hide Unit name
H - Toggle Show/Hide ALL Units Names
[ - spawn new custom unit on base (ground units)
] - spawn new custom unit on stand (air units)

Also, there are a few features:
-Distance display for Line of Sight
-Duplicate Unit Option (in the right mouse button menu) for faster NPC spawning.