• added shortened slanted block

• fixed sidesways edge mount points ('right' mount point changed to 'left')
  
• improved sideways edge mirroring (it's usable but not entirely correct)
  
• tweaked several other mount points
  

• slanted sideways edge (mirroring is still wrong)

• 2x1 slanted edge blocks
  
• pillar cap block

• slanted corner & inverted slanted corner
  
• full-size blast door block
  
• slanted blast door block with inset
  
• rendered icons instead of letter-labels

mod categorized as "block"

• added the L section
  
• fixed mirroring for both T and L section

Forgot to give the small block version its own name. This means all small T section blocks placed so far will revert to the default blast door block when loading a world after this update.