v0.4.0

Adds support for custom predefined field constraints. See the protovalidate documentation for more information.

Updates protovalidate to v0.8.1. Note that this is a breaking change. You may need to make some adjustments to your code:

• Code that imports build.buf.validate.ExpressionProto or build.buf.validate.priv.PrivateProto should now only import build.buf.validate.ValidateProto.
• build.buf.validate.priv.PrivateProto.field was moved to build.buf.validate.ValidateProto.predefined

What's Changed

• Implement predefined field constraints by @jchadwick-buf in #178

Full Changelog: v0.3.2...v0.4.0