v0.9.x to v0.10.x Migration Guide

Breaking Changes in v0.10.0

1. Handler trait signatures changed - methods now take Arc<dyn McpServer> / &dyn McpClient instead of concrete types
2. Transport API redesigned - StdioTransport::new() now takes TransportOptions
3. Auth module restructured - RemoteAuthProvider replaces the old auth system
4. Feature flags reorganized - server, client, macros, stdio, sse, streamable-http, auth

See the full migration guide at doc/migration/v0.9.x-to-v0.10.x.md in the repository.

If you are migrating directly from v0.9.x to v1.0.0, please follow the v0.9→v0.10 guide first, then the v0.10→v1.0 guide.