Pre-Release 16

• Add Half-Wall items (half white/black walls). These don't occupy space behind them, and won't block antlines.
• Add support for Aperture Tag to Overgrown style
• Add Aperture Tag support to Portal Guns, and various other improvements.
• Updates to BTS floor buttons
• Use Portal Stories turrets in Aperture Tag (since the resources are available)
• Add Nigel (Aperture Tag)'s voicelines.
• In 60s style, light strips are now caged.
• Add Overgrown static panels, and faith plates
• Fix visual glitches with catwalk stairs, and make them placeable in goo and on glass/grating.
• Fix fire hazards in 1960s spheres (around crushers/flamethrowers, the walls will be made of fireproof metal and concrete).
• Fix 1980s open spheres not appearing.
• Removed Herobrine

Pre-Release 15

• Fix antline router and magnet
• Custom P1 gel dropper models (different lights for each gel).
• Add flip-flop item. This toggles every time it's triggered.
• Add delay items, which allow inserting a delay between input and output.
• Blend together bottomless pit lighting better.
• Improvements to 50s/70s buttons - fix some Coop bugs.
• Add Old Aperture and P1 chamberlock variants, plus Aperture Tag compatibility.
• Fix orientation of Old Aperture indicators.
• Fix some missing Announcer voice line instances.
• Properly generate broken antlines in Old Aperture and Overgrown styles.
• New version of the collapsed Overgrown entrance 4. (Now works with blue autoportals and Aperture Tag.)
• Broken Sendificator antlines, plus properly styled 50s laser.

pr15.1: Fix broken packfile lists (#200)

Pre-Release 14

• Use templates on many items, to make textures dynamically change to fit:
  • Bases of 50s vents
  • BEEmod door frame
  • Clean floor buttons
  • Clean vents
• Implement dynamic elements in 70s coop spawn room
• Fix Old Aperture Paint Fizzlers not displaying effects
• Remake 80s entry 3
• Add 50s Crusher styled variant
• Fix P1 goo texture
• Add P1 style autoportals
• Use grating instead of glass in P1 piston platforms, when they can submerge in goo.
• Use worldportals or custom models to make P1 light strips embed into the wall
• Fix various issues with gel droppers
• Add WrathOfMobius's conductive plate items (surfaces that detect when cubes are present, and can be enabled/disabled via an input).

Pre-Release 13

• Add Angled Blocks
• Add Flat Partial Blocks
• Add 'Special Marker' item
• Window item stripes always generate horizontally
• Fix BEE logic gates
• Improve P1 observation rooms (floor/ceiling versions, add light models)
• Use models for P1 style sign frames
• Add borders to top and bottom of 50s and BTS fizzlers.
• Generate Cave Portraits dynamically based on chosen voice pack (50s-80s, Clean style)
• Fix 60s flamethrower

Pre-Release 12

• New item: Unstationary Scaffolds. These act like more versatile versions of track platforms. Place emitter items in the map, and link the emitters with antlines in the order you wish the platform to move in. Connect regular inputs to the first emitter to control the whole system. Use the Slot emitter on the beginning and end to make platforms continuously spawn instead of move back and forth.
• New item: Cutout tile. This generates incomplete floors, like many Overgrown or Art Therapy maps. Place two on opposite corners of a rectangular section of floor, and link with antlines. The area covered should be flat. Ensure the sides of the blocks below the item are not visible, as these will be removed.
• Add full Aperture Tag support. Select Aperture Tag's game directory (File > Add Game), and export normally. To place gun activation fizzlers, place the sign item and connect it to a normal fizzler with antlines. The orientation of the fizzler is based on the side the sign is placed on.
  (Currently supported: Clean Coop, SP Clean, SP 50s-80s, SP Portal 1)
• New item: Infinite HEP Pellet - a High Energy Pellet without an emitter.
• Add Old Aperture Track Platform and Stair variants
• Add Old Aperture Companion Cube
• Add 70s and 80s Small Observation Room variants
• Add P1 Piston Platform
• Add P1 portalgun viewmodel
• Add P1 ditch variant
• Generate debris and junk in Overgrown goo pits
• Fix orientation of Clean dropperless Reflection Cubes

Pre-Release 11

If updating from an earlier version, delete 'brushes.zip' from the packages folder - this was renamed to 'decorations.zip'!

• Add dummy Barrier Type property to fix custom fizzler crashes
• Diversity vents no longer have the diamond-shaped platform
• Use ported P1 pellet catcher sound and sprite
• Add new laser window item
• Add 50s variations of several items:
  • Pellet Catcher (based on a version by IVO)
  • Pellet Emitter
  • Laser Catcher
  • Laser Emitter
  • Turret
  • Funnel
  • Glass Frames
  • Angled Panels
  • Diversity Vent
• Use more ported textures to improve P1 style appearance
• Fix P1 pedestal button
• Add P1 Funnel
• Use 1980s lifts (different shaft texture, no fizzler)
• Fix BTS paint droppers
• Add quarter wall item
• Clean track platforms match surrounding tiles
• Fix location of observation grating portals
• New 1970s Coop corridor (#2)

Pre-Release 10

• Overgrown Sendificator
• Rocket Turret
• P1 style Cube, ball and laserfield
• Use real sounds
• Overgrown Cubes (standard, companion, reflection)
• Allow pgun pedestals to be placed on walls and ceilings
• Implement customisable elevator videos

Pre-Release 9

• Use correct ceiling textures in Clean Cube Dropper
• Re-add Overgrown worldportal holes
• Add 50s Small Observation Grate
• Fix BTS exit nodraw
• Add P1 style sendificator
• Portal spawners no longer embed
• Prevent getting stuck in 50s exit 2 via Conversion Gel
• Fix issue with 4th piston in 50s Piston Platform
• Use 4x4 textures behind all light strips
• Add BEE2 Addons ditch item
• Add 4x2x2/2x2x2/4x1x1 item (for all styles)
• Fix P1 dropperless Reflection Cube orientation.