Set latest version to 2025-03-26 (#80)

* Set latest version to 2025-03-26

* Specify support for 2025-03-26 (latest) version

Author: mattt

README.md

@@ -6,7 +6,9 @@ Official Swift SDK for the [Model Context Protocol][mcp] (MCP).
 
 The Model Context Protocol (MCP) defines a standardized way
 for applications to communicate with AI and ML models.
-This Swift SDK provides a robust implementation of both client and server components.
+This Swift SDK implements both client and server components
+according to the [2025-03-26][mcp-spec-2025-03-26] (latest) version 
+of the MCP specification.
 
 ## Requirements
 
@@ -753,4 +755,5 @@ see the [GitHub Releases page](https://github.com/modelcontextprotocol/swift-sdk
 
 This project is licensed under the MIT License.
 
-[mcp]: https://modelcontextprotocol.io
+[mcp]: https://modelcontextprotocol.io
+[mcp-spec-2025-03-26]: https://modelcontextprotocol.io/specification/2025-03-26

Sources/MCP/Base/Versioning.swift

@@ -4,8 +4,8 @@ import Foundation
 /// following the format YYYY-MM-DD, to indicate
 /// the last date backwards incompatible changes were made.
 ///
-/// - SeeAlso: https://spec.modelcontextprotocol.io/specification/2024-11-05/basic/versioning/
+/// - SeeAlso: https://spec.modelcontextprotocol.io/specification/2025-03-26/
 public enum Version {
     /// The current protocol version.
-    public static let latest = "2024-11-05"
+    public static let latest = "2025-03-26"
 }