Add 1405 to release notes

Author: Nick Craver

docs/index.md

@@ -26,6 +26,7 @@ Note: to get the latest pre-release build, add ` -Pre` to the end of the command
 
 - Parameters can now be re-used on subsequent commands (#952 via jamescrowley)
 - Array query support (`.Query<int[]>`) on supported platforms (e.g. Postgres) (#1598 via DarkWanderer)
+- `SqlMapper.HasTypeHandler` is made public for consumers (#1405 via brendangooden)
 
 ### 2.0.90