v0.1.0

Language

• Basic value types: null, boolean, number, string, object, and array
• Reference and variables types
• Array comprehensions
• Built-in functions for basic arithmetic and aggregation
• Incremental and complete rule definitions
• Negation and disjunction
• Module system

Compiler

• Reference resolver to support packages
• Safety check to prevent recursive rules
• Safety checks to ensure successful evaluation will bind all variables in head
  and body of rules

Evaluation

• Initial top down query evaluation algorithm

Storage

• Basic in-memory storage that exposes JSON Patch style API

Tooling

• REPL that can be run to experiment with ad-hoc queries

APIs

• Server mode supports HTTP APIs to manage policies, push and query documents, and execute ad-hoc queries.

Infrastructure

• Basic build infrastructure to produce cross-platform builds, run
  style/lint/format checks, execute tests, static HTML site

Documentation

• Introductions to policy, policy-enabling, and how OPA works
• Language reference that serves as guide for new users
• Tutorial that introduces users to the REPL
• Tutorial that introduces users to policy-enabling with a Docker Authorization plugin