Update documentation for v2.2 release

Author: MatthewDaggitt

CHANGELOG.md

@@ -86,8 +86,6 @@ Deprecated names
   ```agda
   split  ↦  ↭-split
   ```
-  with a more informative type (see below).
-  ```
 
 * In `Data.List.Relation.Unary.All.Properties`:
   ```agda

CITATION.cff

@@ -3,6 +3,6 @@ message: "If you use this software, please cite it as below."
 authors:
 - name: "The Agda Community"
 title: "Agda Standard Library"
-version: 2.1.1
-date-released: 2024-09-07
+version: 2.2
+date-released: 2025-01-15
 url: "https://github.com/agda/agda-stdlib"

doc/README.agda

@@ -3,7 +3,7 @@
 module README where
 
 ------------------------------------------------------------------------
--- The Agda standard library, version 2.1.1
+-- The Agda standard library, version 2.2
 --
 -- Authors: Nils Anders Danielsson, Matthew Daggitt, Guillaume Allais
 -- with contributions from Andreas Abel, Stevan Andjelkovic,
@@ -19,7 +19,8 @@ module README where
 -- and other anonymous contributors.
 ------------------------------------------------------------------------
 
--- This version of the library has been tested using Agda 2.7.0
+-- This version of the library has been tested using Agda 2.7.0 and
+-- 2.7.0.1
 
 -- The library comes with a .agda-lib file, for use with the library
 -- management system.