Update changelog

Author: cavasinf

docs/changes/1.x/1.4.0.md

@@ -27,6 +27,7 @@
 - Reader Word2007: Support Header elements within Title elements by [@SpraxDev](https://github.com/SpraxDev) fixing [#2616](https://github.com/PHPOffice/PHPWord/issues/2616), [#2426](https://github.com/PHPOffice/PHPWord/issues/2426) in [#2674](https://github.com/PHPOffice/PHPWord/pull/2674)
 - Reader HTML: Support for inherit value for property line-height by [@Progi1984](https://github.com/Progi1984) fixing [#2683](https://github.com/PHPOffice/PHPWord/issues/2683) in [#2733](https://github.com/PHPOffice/PHPWord/pull/2733)
 - Writer HTML: Fixed null string for Text Elements by [@armagedon007](https://github.com/armagedon007) and [@Progi1984](https://github.com/Progi1984) in [#2738](https://github.com/PHPOffice/PHPWord/pull/2738)
+- TemplateProcessor: Fix 0 considered as empty string. Fixing [#2572](https://github.com/PHPOffice/PHPWord/issues/2572) in [#2617](https://github.com/PHPOffice/PHPWord/pull/2617)
 
 ### Miscellaneous