[gscan2pdf-help] scantpaper v3.0.7 released

[Jeff <jf...@po...>]

Changes compared to v3.0.6

* Fix bug checking for helper tools. Closes #65 (Graphicsmagick false
   positive)
* Fix traceback during crop caused by selection being None
* Fix updating date metadata between save operations.
   Closes #68 (Datestamps saving wrong)

Available on Github:

https://github.com/carygravel/scantpaper/releases/tag/v3.0.7

Or via the PPA:

https://launchpad.net/~jeffreyratcliffe/+archive/ubuntu/ppa