Release v1.5.0

Release v1.5.0-pre.1.

Patch release v1.4.1

Release v1.4.0.

Patch release v.1.3.1

mcp: fix a race condition in logging

Reading the buffer outside of a critical section can lead to data corruption.

mcp: fix a race condition in logging

Reading the buffer outside of a critical section can lead to data corruption.

mcp: switch icon theme to named string type (modelcontextprotocol#733)

To be consistent with logging level, use a named string type for icon
themes. This improves readability / discoverability, and is more
consistent.

Updates modelcontextprotocol#552
For modelcontextprotocol#725

mcp: switch icon theme to named string type (modelcontextprotocol#733)

To be consistent with logging level, use a named string type for icon
themes. This improves readability / discoverability, and is more
consistent.

Updates modelcontextprotocol#552
For modelcontextprotocol#725

mcp: don't break the streamable client connection for transient errors (

modelcontextprotocol#723)

When POST requests in the streamableClientConn return a transient error,
return this error to the caller rather than permanently breaking the
connection.

This is achieved by using the special sentinel ErrRejected error to the
jsonrpc2 layer. In doing so, the change revealed a pre-existing bug:
ErrRejected had the same code as ErrConnectionClosing, and
jsonrpc2.WireError implements errors.Is, so the two sentinel values
could be conflated. This is fixed by using a new internal code.

There's more to do for modelcontextprotocol#683: we should also retry transient errors in
handleSSE.

For modelcontextprotocol#683