Adds CHANGELOG entry for #241

Author: weierophinney

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
-## 2.10.3 - TBD
+## 2.10.3 - 2018-12-13
 
 ### Added
 
@@ -22,6 +22,9 @@ All notable changes to this project will be documented in this file, in reverse
 
 ### Fixed
 
+- [#241](https://github.com/zendframework/zend-validator/pull/241) has the `Hostname` validator return an invalid result early when an empty
+  domain segment is detected.
+
 - [#232](https://github.com/zendframework/zend-validator/pull/232) updates the `Hostname` validator to allow underscores in subdomains.
 
 - [#218](https://github.com/zendframework/zend-validator/pull/218) fixes a precision issue with the `Step` validator.