update to final phpoffice/common version

Author: troosan

CHANGELOG.md

@@ -32,6 +32,7 @@ v0.15.0 (?? ??? 2018)
 - Fix colspan and rowspan for tables in HTML Writer @mattbolt #1292
 - Fix parsing of Heading and Title formating @troosan @gthomas2 #465
 - Fix Dateformat typo, fix hours casing, add Month-Day-Year formats @ComputerTinker #591
+- Support reading of w:drawing for documents produced by word 2011+ @gthomas2 #464 #1324
 
 ### Changed
 - Remove zend-stdlib dependency @Trainmaster #1284

composer.json

@@ -61,7 +61,7 @@
         "php": "^5.3.3 || ^7.0",
         "ext-xml": "*",
         "zendframework/zend-escaper": "^2.2",
-        "phpoffice/common": "dev-develop"
+        "phpoffice/common": "^0.2.9"
     },
     "require-dev": {
         "phpunit/phpunit": "^4.8.36 || ^5.0",