inclusion of GIDCollections (from create nodes/layers), no way to distinguish layers and collections when printing
storing metadata in the GIDCollection members, not as subclass, since a generic mechanism can cover many applications. (Dictionary based access method)
different options to be discussed:
additional generic get/set_metadata
new class members
more classes / subclasses
Discussion about Github Projects
close finished projects
open new projects for sorting issues
discussion needs to be continued regarding grouping of issues