Fixed bug on jpgraph dependencies (It's suggested to use composer jpgraph/jpgraph instead of requiring these files)
Minor Docblock update: return values on load function for PHPExcel_Reader_IReader and Excel2007 now listed as @return PHPExcel in order to utilize auto complete via IDE.
Merge pull request #386 from trxndynamics/develop

Minor Docblock update: return values on load function for PHPExcel_Reade...
Merge pull request #383 from alex-ception/develop

Fixed bug on jpgraph dependencies
Minor Docblock update: corrected the return value from PHPExcel_Shared_Date::ExcelToPHPObject updated to reflect the PHP DateTime object that is to be returned.
Merge pull request #387 from trxndynamics/develop

Minor Docblock update: corrected the return value from PHPExcel_Shared_Date::ExcelToPHPObject updated to reflect the PHP DateTime object that is to be returned.
Improve speed of calculation for autosize columns to reduce save time
Don't cache column width adjustment, because it should be based on the font size being used for a cell, and so should be dynamic
Fixed failed include PHPExcel.php
Merge pull request #398 from papettoTV/develop

Fixed failed include PHPExcel.php in Examples/34chartupdate.php
Added PHP 5.6 and HHVM to travis.yml
Merge pull request #399 from Nyholm/patch-1

Added PHP 5.6 and HHVM to travis.yml