updated changelog for 5.3.1 release

docs/installation/changelog.md

@@ -9,6 +9,24 @@
 
 # ExpressionEngine v5 Change Log
 
+## Version 5.3.1
+
+Release Date: April 2, 2020
+
+- **Added support for PHP 7.4**
+- Added the ability to add additional parameters to `form_declaration` functions. Updated function will accept an additional array that will allow for use with data attributes, target, or other JavaScript actions.
+
+- Fixed a bug ([#147](https://github.com/ExpressionEngine/ExpressionEngine/issues/147)) where `is_system_on` was changed to `y` when updating the CMS.
+- Fixed a bug ([#188](https://github.com/ExpressionEngine/ExpressionEngine/issues/188)) where image uploads where failing because of missing integer casting.
+- Fixed a bug ([#190](https://github.com/ExpressionEngine/ExpressionEngine/issues/190)) where omitting the return parameter for the `{exp:consent:form}` tag didn't redirect to same page as it was submitted on per the [docs](https://docs.expressionengine.com/latest/add-ons/consent.html#return).
+- Fixed a bug ([#248](https://github.com/ExpressionEngine/ExpressionEngine/issues/248)) where the `after_channel_entry_save` extension hook would run twice when saving a new channel entry.
+- Fixed a bug ([#292](https://github.com/ExpressionEngine/ExpressionEngine/issues/292)) where a user was unable to delete page uri or page template with default theme installed.
+- Fixes a bug ([#321](https://github.com/ExpressionEngine/ExpressionEngine/issues/321)) where a warning was not being displayed when an entry was saved if a URI was entered in the Pages module without also selecting a template.
+- Fixed a bug ([#337](https://github.com/ExpressionEngine/ExpressionEngine/issues/337)) where an entry with a URL title of `n` was being ignored.
+- Fixed a bug ([#346](https://github.com/ExpressionEngine/ExpressionEngine/issues/346)) where strpos Non-string needles will be interpreted as strings in the future.
+- Fixed a bug ([#382](https://github.com/ExpressionEngine/ExpressionEngine/issues/382)) where drag and drop fields were producing errors in MSM sites.
+
+
 ## Version 5.3.0
 
 Release Date: September 28, 2019