Incremented version number to 0.3.7

When saving files an older version number is used if that version of MSE would be able to open the set

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@1011 0fc631ac-6414-0410-93d0-97cfa31319b6

src/data/installer.hpp

@@ -45,6 +45,7 @@ class Installer : public Packaged {
 	
   protected:
 	String typeName() const;
+	Version fileVersion() const;
 	DECLARE_REFLECTION();
 };