* duh' progressbar does not work through Gimp::Net

* return values for run()

* tracing through Gimp::Net (tough ;)

* unimplemented functions:
gimp_drawable_mask_bounds
gimp_drawable_offsets
*tile* functions
*rgn* functions
gimp_gradients_get_list
gimp_gradients_sample_uniform
gimp_gradients_sample_custom

* default function parameters (with hash %defaults?)

gimp_text(text => "hallo", family => "engraver", size => 20);

