Changelog for Minecraft 1.21.1

All notable changes to this project will be documented in this file.

1.21.1-1.31.0 - 2026-02-17 10:58:49

Added

• Add configurable pulse length property to Redstone Writer, Closes #724 (#1602)
• Document logical NBT expressions, CyclopsMC/CyclopsCore#210
• Add config options for minimum update intervals for parts, Closes CyclopsMC/IntegratedTunnels#349
• Add config option to log card IDs during evaluation, Closes #1345
• Add translations through Crowdin (#1598)

1.21.1-1.30.5 - 2026-01-24 15:18:33 +0100

Added

• Add translations through Crowdin

Fixed

• Fix missing capability invalidation on modified parts, #1594

1.21.1-1.30.4 - 2026-01-17 14:10:56 +0100

Added

• Add Almost Unified integration
• Add generic number casting operators Closes CyclopsMC/IntegratedScripting#55 These new operators make it more convenient to work with return types of Integrated Scripting, where numbers could be integers, doubles, or longs.

Changed

• Add safety check for infinite lists in list equals and itemstack count Closes #1583 Related to #1582

Fixed

• Fix part states not being revalidated, Closes #1588
• Fix oldest/newest mixup on delayer history in book, Closes #1592
• Fix cable shape cache having cache collisions when there are two entries that have the same part on two different sides while having the same cable connections

1.21.1-1.30.3 - 2026-01-02 10:52:15 +0100

Added

• Add translations through Crowdin (#1581)

Changed

• Add IIngredientChannelInsertPreConsumer Required for CyclopsMC/IntegratedCrafting#170

1.21.1-1.30.2 - 2025-12-31 14:35:18 +0100

Changed

• Keep insertion order of network change observers Required for CyclopsMC/IntegratedCrafting#112

1.21.1-1.30.1 - 2025-12-28 09:18:50 +0100

Fixed

• Add safety checks to disable some operators on infinite lists Concretely, contains, reduce, and uniq are disabled on infinite lists. Closes #1582
• Fix documentation on NBT Path field selector array indexing (#1580) Closes #1579

1.21.1-1.30.0 - 2025-12-23 09:44:17 +0100

Added

• Add squeezer recipes for clearing facades

1.21.1-1.29.7 - 2025-12-19 20:04:37 +0100

Fixed

• Catch exceptions when deserializing invalid recipes

This could occur in Integrated Crafting after removing a mod for which a recipe was stored.

Closes CyclopsMC/CommonCapabilities#46

1.21.1-1.29.6 - 2025-11-25 17:01:08 +0100

Fixed

• Restore network element chunk unloading again, Closes #1571

1.21.1-1.29.5 - 2025-11-24 16:59:00 +0100

Fixed

• Temporarily disable chunk unload check again

It is causing issues with delayers after chunk reloaded. Once a proper fix is available, this will be re-enabled.

Related to #1571

1.21.1-1.29.4 - 2025-11-22 11:29:48 +0100

Fixed

• Restore network element chunk unloading This was temporarily disabled as it broke delayers and proxies on world/chunk reload, which t

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