Yothalot-PHP 2.6.0

• Fix C++ exceptions that bubbled up to PHP space if a Yothalot\Output object was not correctly constructed
• Use the pid of the process as a prefix to avoid getting the same 'unique' id, resulting in failure of directory creation
• Update extension to be compatible with updated yothalot library (input object no longer supports start and size parameter, but a strict parameter)
• Add dependencies to makefile
• Add the recompress option to the Yothalot\Output::flush method