Update readme

Author: bjorn2404

readme.md

@@ -35,6 +35,13 @@ filtering.
 
 ## Changelog
 
+### Version 3.1.1
+
+* Enhanced filtering regular expression to better account for exact matches vs. substrings
+* Fixed multi-category selection filtering issue introduced in last version 3.1.0
+* Updated bundled Handlebars to v4.7.6
+* Updated node modules.
+
 ### Version 3.1.0
 
 * Added featuredDistance setting to restrict featured locations by a specified distance (number value should be used).