ChangeLog: add 0.13.1 note

Author: Anton-Latukha

ChangeLog.md

@@ -1,6 +1,11 @@
 
 # ChangeLog
 
+### [(diff)](https://github.com/haskell-nix/hnix/compare/0.13.0.1...0.13.1#files_bucket) 0.13.1 (2021-05-22)
+  * [(link)](https://github.com/haskell-nix/hnix/pull/936/files) `Nix.Parser`: `annotateLocation`: Fix source location preservation.
+  * [(link)](https://github.com/haskell-nix/hnix/pull/934/files) Require Cabal dependency `relude` `>= 1.0`: since imports & Cabal file got cleaned-up & that clean-up depends on `relude` reimports introduced in aforementioned version.
+  * Refactors, reorganization in some modules, docs, clean-ups.
+
 #### [(diff)](https://github.com/haskell-nix/hnix/compare/0.13.0...0.13.0.1#files_bucket) 0.13.0.1 (2021-05-11)
   * [(link)](https://github.com/haskell-nix/hnix/pull/931/files) `Nix.Expr.Types`: Fix CPP on `Instances.TH.Lift` import.