chore(main): release 0.3.0

[release-please]

🤖 I have created a release beep boop

0.3.0 (2025-07-31)

⚠ BREAKING CHANGES

• deps: Make opentelemetry an optional dependency (#369)
• spec: Update Agent Card Well-Known Path to /.well-known/agent-card.json (#320)
• Remove custom __getattr__ and __setattr__ for camelCase fields in types.py (#335)
• Add mTLS to SecuritySchemes, add oauth2 metadata url field, allow Skills to specify Security (#362)
• Support for serving agent card at deprecated path (#352)

Features

• Add metadata as parameter to TaskUpdater.update_status() (#371) (9444ed6)
• Add mTLS to SecuritySchemes, add oauth2 metadata url field, allow Skills to specify Security (#362) (be6c517)
• Add RESTful API Serving (#348) (82a6b7c)
• Add server-side support for plumbing requested and activated extensions (#333) (4d5b92c)
• Allow agent cards (default and extended) to be dynamic (#365) (ee92aab)
• Support for serving agent card at deprecated path (#352) (2444034)
• support non-blocking sendMessage (#349) (70b4999)
• Type update to support fetching extended card (#361) (83304bb)

Bug Fixes

• Add Input Validation for Task Context IDs in new_task Function (#340) (a7ed7ef)
• deps: Reduce FastAPI library required version to 0.95.0 (#372) (a319334)
• Remove DeprecationWarning for regular properties (#345) (2806f3e)
• spec: Add SendMessageRequest.request json_name mapping to message proto (bc97cba)
• spec: Add Transport enum to specification (fix(spec): Add Transport enum to specification A2A#909) (d9e463c)

Documentation

• Address typos in docstrings and docs. (#370) (ee48d68)

Miscellaneous Chores

• Add support for authenticated extended card method (#356) (b567e80)

Code Refactoring

• deps: Make opentelemetry an optional dependency (#369) (9ad8b96)
• Remove custom __getattr__ and __setattr__ for camelCase fields in types.py (#335) (cd94167)
• spec: Update Agent Card Well-Known Path to /.well-known/agent-card.json (#320) (270ea9b)

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[release-please]

🤖 Created releases:

• v0.3.0

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