0.6.0-rc.0 - 2026-04-24

Add imports and dependency resolution, including pub/use syntax, re-exports, aliases, transitive dependencies, collision diagnostics, functional tests, examples, and simc --dep for compiling multi-file programs. #264
Replaced the deprecated WithFile trait with WithContent and WithSource to cleanly separate single-file execution from multi-file environments. Additionally, replaced the file() method on RichError with source(). #266
Clean up whitespace in the generated jet documentation. #276

0.5.0 - 2026-04-17

Migrate from the pest parser to a new chumsky-based parser, improving parser recovery and enabling multiple parse errors to be reported in one pass #185
simc now accepts --args <file> for parameterized contracts, witness input is supplied explicitly via --wit <file>, and JSON output now includes the program Commitment Merkle Root (CMR) #200, #231
Expose contract ABI metadata for tooling via simc --abi, and add library accessors for parameter and witness types #201, #219
Improve pattern matching in match statements, including more complex destructuring forms #242
Improve parser and type diagnostics by rejecting duplicate type-alias definitions and built-in alias redefinitions, and by fixing lexer/parser handling around :: and angle-bracket-delimited syntax #221, #222, #243, #247
Improve compiler diagnostics rendering for UTF-16 text in both single-line and multiline spans #255, #257
Move jet documentation into the compiler, add the simplicityhl-codegen binary behind the docs feature, and correct docs for build_tapleaf_simplicity, unwrap_left, and unwrap_right #229, #230, #251
Update the LSP to use the new chumsky parser #223
Correct FullMultiply signatures and tracker argument decoding #274

VSCode and LSP developer experience improvements -- #199, #214
Adjust jet trace debug-wrapper removal heuristic #198 — not an ideal solution, but adopted as a temporary approach per the discussion in #197.
analyze_named_module: make missing modules equivalent to empty ones #187

Add array_fold builtin function #145
Add getters for Span and improve error handling #146
Add VSCode extension with LSP support #148 #149
Switch NUMS key to BIP-0341 suggested key #143
Fix array_fold powers-of-two bug; fix simc CLI when serde is disabled; enable serde by default #159
Update rust-simplicity to 0.6 #143 #160