v0.9.0

0.9.0 (2026-11-01)

Features

• crosswalk: add a keep list of paths carried through unchanged (64671de)
• crosswalk: let a single-path rule leave out a to that equals its from (7a5272b)

Performance Improvements

• executor: check the output is JSON without copying it (7088e20)
• executor: validate and prepare a crosswalk once per crosswalk object (48b4366)
• executor: walk each source array once for all the rules that read it (f75bfff)
• paths: find gaps with one trail and format a write's path only on failure (fca33ac)

Documentation

• contributing: keep the executor and its reference in step (31fba57)

Tests

• exact-json: refuse an array of a subclass, which the schema copies (f6a468a)
• executor: compare the executor with a frozen reference copy of it (f8b8af5)

Chores

• bench: measure a crosswalk the rule-at-a-time executor runs (8bd2eca)
• bench: measure encode and decode against a hand-written copy (1bb1590)
• bench: measure the identity crosswalk written as a keep list (db2a1e8)