Changes:
6.0.023 (2013-08-05)
- GNU Freefont fonts were updated.
- Licensing and copyright information about fonts were improved.
- PNG image support was improved.
6.0.022 (2013-08-02)
- fixing initialization problem for signature_appearance property.
6.0.021 (2013-07-18)
- The bug caused by the preg_split function on some PHP 5.2.x versions was fixed.
6.0.020 (2013-06-04)
- The method addTTFfont() was fixed (Bug item #813 Undefined offset).
6.0.019 (2013-06-04)
- The magic constant __DIR__ was replaced with dirname(__FILE__) for php 5.2 compatibility.
- The exceptions raised by file_exists() function were suppressed.