\Prodata\DataSet\Integer: setMin() and setMax() setters and fillFromArray() method added
\Prodata\DataSet: factory method for DataSet objects creating and options setting. 
\Prodata\DataSet\StrList::fillFromArray() and \Prodata\DataSet\Integer::fillFromArray() methods
\Prodata\DataSetFactory created
Added tests for Prodata\DataSet\Integer::fillFromArray() method
UnsupportedDataSetException renamed to UnsupportedDataSet
Added classes: UnsupportedDataSetException and EmptyDataSetException
Added in \Prodata\DataSet\StrList tests: empty values list and fillFromArray() method
Added tests for \Prodata\DataSetFactory
Applying PSR-2 coding style
Generated apidoc for previous changes