release notes 2.1.4

Author: mgravell

docs/index.md

@@ -24,6 +24,8 @@ Note: to get the latest pre-release build, add ` -Pre` to the end of the command
 
 (note: new PRs will not be merged until they add release note wording here)
 
+### 2.1.4
+
 - add untyped `GridReader.ReadUnbufferedAsync` API (#1958 via @mgravell)
 - tweak NRT annotations on type-handler API (#1960 via @mgravell, fixes #1959)