Bump version to 1.2.2.1

changelog.md

+1.2.2.1
+
+* The switch to `integer-pure` in 1.2.2.0 was apparently mistaken.
+  The build flag has been renamed accordingly.  Your army of diligent
+  maintainers apologizes for the churn.
+
+* Spec compliance: toCaseFold now follows the Unicode 8.0 spec
+  (updated from 7.0)
+
+* An STG lint error has been fixed
+
 1.2.2.0
 
 * The `integer-simple` package, upon which this package optionally

text.cabal

 name:           text
-version:        1.2.2.0
+version:        1.2.2.1
 homepage:       https://github.com/bos/text
 bug-reports:    https://github.com/bos/text/issues
 synopsis:       An efficient packed Unicode text type.