Patch notes 2026-07-12 — Steam App 4467860 Steam update #90144

Lily 2026-07-12 Swamp 0.5.18 AddedFormatted string interpolation with support for width, precision, alignment, zero padding, binary, and lower/upper hexadecimal formatting.Support for Slice .Specific error for missing mutable borrow. Changedswamp test no longer scrambles memory by default. Use --scramble-memory to enable it.Removed the deprecated use_super_instructions codegen option. Super instructions are now emitted whenever possible. FixedSource locations for collection lookups point to the usage site instead of the definition. Call stacks and other debug output are now more accurate.LSP: Debug CodeLens now refreshes more reliably.LSP: Projects using correct absolute path for build artifacts. ImprovedError messages involving type names show fully qualified module names instead of internal type id. ExperimentalContinued work on Slice coercions to/from Vec . Lily Runtime 0.4.13 Addedsc...