CHANGELOG: release v1.6.1

Signed-off-by: Matt Layher <mdlayher@gmail.com>

Author: mdlayher

CHANGELOG.md

@@ -2,6 +2,13 @@
 
 ## Unreleased
 
+## v1.6.1
+
+- [Deprecation] [commit](https://github.com/mdlayher/netlink/commit/d1b69ea8697d721415c259ef8513ab699c6d3e96): 
+  the `netlink.Socket` interface has been marked as deprecated. The abstraction
+  is awkward to use properly and dsiables much of the functionality of the Conn
+  type when the basic interface is implemented. Do not use.
+
 ## v1.6.0
 
 **This is the first release of package netlink that only supports Go 1.13+.