changed tabs with spaces, updated changelog

Author: oscarotero

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 Previous releases are documented in [github releases](https://github.com/oscarotero/Gettext/releases)
 
+## [5.5.1] - 2020-06-08
+### Fixed
+- Type error in which numeric filenames were converted to integers [#260]
+
 ## [5.5.0] - 2020-05-23
 ### Added
 - New option `addReferences()` to configure the code scanners whether add or not references [#258]
@@ -76,7 +80,9 @@ Previous releases are documented in [github releases](https://github.com/oscarot
 [#251]: https://github.com/php-gettext/Gettext/issues/251
 [#253]: https://github.com/php-gettext/Gettext/issues/253
 [#258]: https://github.com/php-gettext/Gettext/issues/258
+[#260]: https://github.com/php-gettext/Gettext/issues/260
 
+[5.5.1]: https://github.com/php-gettext/Gettext/compare/v5.5.0...v5.5.1
 [5.5.0]: https://github.com/php-gettext/Gettext/compare/v5.4.1...v5.5.0
 [5.4.1]: https://github.com/php-gettext/Gettext/compare/v5.4.0...v5.4.1
 [5.4.0]: https://github.com/php-gettext/Gettext/compare/v5.3.0...v5.4.0

src/References.php

@@ -69,9 +69,9 @@ public function mergeWith(References $references): References
 
         foreach ($references as $filename => $lines) {
             //Set filename always to string
-			$filename = (string) $filename;
-			
-			if (empty($lines)) {
+            $filename = (string) $filename;
+
+            if (empty($lines)) {
                 $merged->add($filename);
                 continue;
             }