Changelog

Every update,
documented.

A complete record of everything that's shipped — new features, improvements, and bug fixes.

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v1.0.0

March 1, 2026

New Feature

Full public release

expr is now generally available. All expression types, the REST API, and the web evaluator are stable and production-ready.

New Feature

Pricing plans and API key management

Pro, Ultra, and Mega plans are live. API keys can be generated, rotated, and revoked from the new account dashboard.

Improvement

Operator reference documentation

Full documentation for every supported operator — unary, binary, and ternary — with truth tables, descriptions, and examples is now live at /documentation.

Fix

Division by zero threw an unhandled error

Instead of crashing the evaluator, x / 0 now correctly returns Infinity and 0 / 0 returns NaN, matching JavaScript semantics.