Prepare release 0.2.19.1 (#428)

Author: sjakobi

CHANGES.md

@@ -1,3 +1,11 @@
+## [0.2.19.1] – April 2022
+
+* [Fix bug in `intersection[With[Key]]`](https://github.com/haskell-unordered-containers/unordered-containers/pull/427)
+
+* [Improve docs of bit twiddling functions](https://github.com/haskell-unordered-containers/unordered-containers/pull/396)
+
+[0.2.19.1]: https://github.com/haskell-unordered-containers/unordered-containers/compare/v0.2.19.0...v0.2.19.1
+
 ## [0.2.19.0] – April 2022
 
 * [Make intersections much faster](https://github.com/haskell-unordered-containers/unordered-containers/pull/406)

unordered-containers.cabal

@@ -1,5 +1,5 @@
 name:           unordered-containers
-version:        0.2.19.0
+version:        0.2.19.1
 synopsis:       Efficient hashing-based container types
 description:
   Efficient hashing-based container types.  The containers have been