Main features: ability to export with transparency to PDF and RAD Studio XE7 support.

+ Added support of Embarcadero RAD Studio XE7 for both Delphi and
C++Builder developing environment
+ Added support of Embarcadero RAD Studio XE6 for both Delphi and
C++Builder developing environment
+ Added TfrxCheckBoxView component
+ Added ability to export with transparency to PDF
+ Improved CrossTab editor
- Fixed performance issue with XE6 and above on OSX platform
- Fixed problem with components registration on XE5 and above
- Fixed embedded Fonts in PDF export on x64 platfoorm
- Fixed CrossTab and TeeChart editors errors on XE5 and above
- Fixed TfrxDBDataSet editor
- Fixed printing report with different pages dimensions
- Fixed Memo and Code editiors on XE6