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gnocl::text new option -data, new command cget

Been adding a few tweaks to the code today. Added the -data option and the cget command. Also slightly modified the percentage substitution strings for the gnocl::entry -onIconPress event handler. Hitherto %t would have provided details about a the mousebutton event. It makes more sense to us %b allowing %t to be used to substitute the contents of the entry buffer.

Finally, I'm working on a simple text editing widget to add to the gnocl::megawidgets package. Its nothing fancy, no rich text editing, just a simple scribble pad to embed in those app which might need it!

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