* Backport: Support for Resource and ResourceTemplate metadata.
* fix: return HTTP 404 for unknown session IDs instead of 400.
From v.1.25.0:
* Fix for Url Elicitation issue.
From v1.24.0:
* feat: client-side support for SEP-1577 sampling with tools.
* Fix JSON-RPC error response ID matching.
* Add `streamable_http_client` which accepts `httpx.AsyncClient`
* instead of `httpx_client_factory`.
* Fix: use correct python command name in `test_stdio.py`.
Signed-off-by: Egbert Eich <eich@suse.com>