Update CHANGELOG for 1.1.3

CHANGELOG.md

@@ -1,34 +1,52 @@
 # Changelog
 
+## [1.1.3] - 2018-03-27
+
+### Updated
+
+- `composer.lock` tracks `symfony/yaml` v4.0.6
+
+### Fixed
+
+- Added input args validation to check for multiple files and updated README
+  (fixes #7)
+- Improved syntax in README docs (resolves #4)
+
 ## [1.1.2] - 2017-12-07
 
 ### Added
+
 - Added support for Symfony 4 YAML component
 - New CLI option for displaying application version
 - README documentation now includes 'dependencies' badge
 
 ### Updated
+
 - Refactored custom 'UsageException' class into standalone file
 - Updated application descriptions to emphasise 'compact' design of the application
 - composer update now tracks latest Symfony 4 YAML in local sandbox (composer.lock)
 
 ### Fixed
+
 - Fix to accommodate changes in the Yaml::parse method introduced in v3
 
 ## [1.1.1] - 2016-11-11
 
 ### Added
+
 - Switched to full array notation, allowing legacy PHP support
 - composer update tracks latest Symfony 3 YAML in local sandbox (composer.lock)
 
 ## [1.1.0] - 2016-09-12
 
 ### Added
+
 - Support for reading from stdin
 - box.json manifest for building PHAR binaries
 - Enabled support for Symfony 3 YAML component
 
 ## [1.0.0] - 2016-03-02
 
 ### Added
+
 - Initial release