v1.3.0-rc1

Highlights

• feat(python): add async grpc mode for python by @chaokunyang in #3768
• feat(compiler): add dart gRPC codegen by @yash-agarwa-l in #3723

Features

• feat(python): add async grpc mode for python by @chaokunyang in #3768
• feat: limit remote schema metadata by @chaokunyang in #3770
• feat(compiler): add dart gRPC codegen by @yash-agarwa-l in #3723

Bug Fix

• fix(java): guard aligned varint unsafe read by @chaokunyang in #3772
• fix(java): cache accepted type checker classes by @chaokunyang in #3773

Other Improvements

• docs: refine gRPC support guides by @chaokunyang in #3767
• docs: add threat model + SECURITY.md/AGENTS.md discoverability by @potiuk in #3734
• chore(release): enforce OpenJDK 25 for JVM publishing by @chaokunyang in #3775

New Contributors

• @potiuk made their first contribution in #3734

Full Changelog: v1.2.0...v1.3.0-rc1