Release v1.6.0

Release v1.6.0-pre.1

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