Release v0.4.0

Features

• Added support for protos in conformance tests.
• Added a cel-spec go module.

Tests

• AND / OR error handling
• Macro equivalence
• Mixed type comparison
• has macro tests on maps, proto2, and proto3
• Empty proto fields, single-field proto literals
• Unicode strings

Fixes

• Fix bad quoting in the conformance tests
• Namespace tests split into their own suite
• Document JSON conversion
• Fixed nested protobuf.Any comparisons.

Release v0.3.0

Features

• More timestamp and duration conformance tests
• Environment declaration / definition tests
• A new --skip_test flag for bypassing unimplemented parts of the spec.

Fixes

• Off-by-one issues in Timestamp helpers
• Byte literal examples.
• Clarifications in the language specification.

Early version of CEL spec and protocol buffer files.

Merge pull request #9 from eobrain/master

Enable Travis continuous integration testing of proto files