docs: adds CHANGELOG entry for #264

CHANGELOG.md

@@ -6,10 +6,14 @@ All notable changes to this project will be documented in this file, in reverse
 
 ### Added
 
+- [#264](https://github.com/zendframework/zend-validator/pull/264) adds `Zend\Validator\UndisclosedPassword`, which can be used to determine if a password has been exposed in a known data breach as reported on the [Have I Been Pwned?](https://www.haveibeenpwned.com) website. [Documentation](https://docs.zendframework.com/zend-validator/validators/undisclosed-password/)
+
 - [#266](https://github.com/zendframework/zend-validator/pull/266) adds a new option to the `File\Extension` and `File\ExcludeExtension` validators, `allowNonExistentFile`. When set to `true`, the validators will continue validating the extension of the filename given even if the file does not exist. The default is `false`, to preserve backwards compatibility with previous versions.
 
 ### Changed
 
+- [#264](https://github.com/zendframework/zend-validator/pull/264) bumps the minimum supported PHP version to 7.1.0.
+
 - [#279](https://github.com/zendframework/zend-validator/pull/279) updates the `magic.mime` file used for file validations.
 
 ### Deprecated
@@ -18,7 +22,7 @@ All notable changes to this project will be documented in this file, in reverse
 
 ### Removed
 
-- Nothing.
+- [#264](https://github.com/zendframework/zend-validator/pull/264) removes support for PHP versions prior to 7.1.0.
 
 ### Fixed