Update changelog with 1.4.2.2

Author: hasufell

changelog.md

@@ -2,6 +2,14 @@
 
 _Note: below all `FilePath` values are unquoted, so `\\` really means two backslashes._
 
+## 1.4.2.2 *WIP*
+
+* Document relation between `joinPath` and `(</>)` wrt [#82](https://github.com/haskell/filepath/issues/82), [#82](https://github.com/haskell/filepath/issues/86)
+* Clarify that `normalise` does not remove `..` wrt [#86](https://github.com/haskell/filepath/issues/86)
+* Make clear that `equalFilePath` does not expand `..` wrt [#87](https://github.com/haskell/filepath/issues/87)
+* Fix haddock source links by manually cpping wrt [#81](https://github.com/haskell/filepath/issues/81)
+* Make export list in `System.FilePath` explicit to get haddocks on the landing module
+
 ## 1.4.2.1 *Jul 2018*
 
  * Bundled with GHC 8.6.1