Updated CHANGES.md

CHANGES.md

@@ -4,6 +4,25 @@ All notable changes to this project will be documented in this file.
 
 Note - All hash comments refer to the issue number. Eg. #169 refers to https://github.com/markn86/moodle-mod_customcert/issues/169.
 
+## [3.7.1] - 2019-06-17
+
+### Added
+
+- Added new custom course field element (#274).
+- Added ability to specify the current date for date related elements (#289).
+
+### Changed
+
+- String improvements for the 'Date range' element.
+
+### Fixed
+
+- Use negative numbers for constants in the 'Date range' element. The reason being that we may have a module
+  that has an id matching one of these positive values. Sites which are using the 'Date range' element (sites
+  which are **not** using this element do **not** have to do anything) will need to re-edit each element, select
+  the date item again and save. An upgrade step was not created because it is impossible to tell if the site does
+  actually want the constant or if they actually want the date for the module.
+
 ## [3.6.2] - 2019-05-28
 
 ### Changed