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August Update

Recent enhcancements to the core widget set and commands.

2018-07
    gnocl::image
        o new command, 'save' will save modified image.
    gnocl::licence
        o extended range of available licences to include Creative Commons
        o new command, 'types' will return accronyms of supported licence types.
    gnocl::labelText
        o problems using -variable option now resolved.
        o cget -data now works properly
        o %d subsitution in -onChanged now implemented
        o default wrapMode set to word, widget size 300 x 200 pixels   
    gnocl::exec
        o now works properly, defaults to synchronous fork, use & as in Tcl to use an asynch fork.
    gnocl::text
        o recent bug in rollover functionality now fixed.

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