Changelog

Version: 0.2.1
Date: 2026-10-24
  Compatibility:
    - Verified against Factorio 2.1.23 stable and Advanced Fluid Handling / Underground Pipe Pack 2.0.7.
    - Confirmed all AFH T3 source prototypes, rotation-table entries and referenced space graphics/assets
      used by this add-on are still present and compatible in Advanced Fluid Handling 2.0.7.
    - No Lua prototype migration is required for Factorio 2.1.23: FluidBox.volume,
      PipeConnectionDefinition.connection_type/max_underground_distance/underground_collision_mask and
      RecipePrototype.categories used by this add-on remain valid.
    - Krastorio 2 2.1.4+ and Space Exploration 0.7.63+ remain the minimum optional dependency versions
      for their Factorio 2.1.22+ FluidBox/temperature API fixes.
  Release:
    - Prepared and re-audited the archive for Mod Portal release.
    - Verified that no development, test, debug, VCS, backup or log files are included.
  Notes:
    - Kept base >= 2.1.20 because this add-on itself does not use APIs introduced after 2.1.20.
    - No gameplay, recipe, balance or prototype behavior changes were required for this release.

Version: 0.2.0
Date: 2026-09-25
  Compatibility:
    - Ported the add-on to Factorio 2.1.20.
    - Raised the Advanced Fluid Handling dependency floor to 2.0.7 (Factorio 2.1 branch).
    - When installed, Krastorio 2 now requires 2.1.3+ and Space Exploration requires 0.7.62+
      to match their verified Factorio 2.1.20 compatibility releases.
    - Migrated all generated Space Exploration recipes from RecipePrototype.category to categories.
  Notes:
    - No ItemPrototype fuel-category migration is required by this add-on; it defines no fuel items.
    - No probabilistic products are defined by this add-on.

Version: 0.1.2
Date: 2026-09-07
  Features:
    - Restored the historic Space Pipe Coupler as a dedicated SE-tier intermediate.
    - Space Pipe Coupler recipe: 1 Large Pipe Coupler + 2 Space Pipes + 2 Heavy Girders.
  Balancing:
    - Replaced Large Pipe Couplers with Space Pipe Couplers in all restored space-pipe recipes.
    - Added 1 Swivel Joint to the rotatable 1->1, 1->2 and 1->3 surface fittings.
    - The symmetric 1->4 fitting and fixed underground I/L/T/X junctions require no Swivel Joint.
    - Retained the 32-tile underground-junction reach and Space Pipe costs introduced in 0.1.1.

Version: 0.1.1
Date: 2026-09-07
  Balancing:
    - Increased the underground reach of the four fully underground Space Exploration pipe
      junctions (I/L/T/X) from 16 to 32 tiles.
    - Scaled Space Pipe ingredient cost to underground reach: straight I uses reach / 2
      (16 Space Pipes at 32 tiles); L/T/X use reach / 4 (8 Space Pipes each at 32 tiles).
    - Heavy Girder and Large Pipe Coupler costs are unchanged.

Version: 0.1.0
Date: 2026-09-07
  Features:
    - Added a Space Exploration pipe tier using AFH's retained historical prototype names.
    - Added the compact 1x1 underground space pump with 16-tile underground reach.
    - Reuses AFH's existing CTRL+R rotation support for the restored space pipe variants.
  Compatibility:
    - Hard dependency on Advanced Fluid Handling (underground-pipe-pack) >= 2.0.6.
    - Optional dependency on Space Exploration; space content is only created when SE is installed.
    - Optional dependency on Krastorio 2 for deterministic load order in K2/SE stacks.
    - Uses SE space-pipe collision rules and SE space-pipe fluid capacity.
  Changes:
    - AFH overflow, top-up and check valves are hidden and their technology unlocks removed.
    - Hidden legacy space-valve items are supplied when SE is present to satisfy AFH 2.0.6's retained
      space-valve entity references without exposing valves to normal gameplay.