Bug of game bug fixes extended by igrik

This plugin prevents a hero from learning a banned spell from artifacts, for example, a hero can no longer learn Scuttle Boat from Sea Captain's Hat when Scuttle Boat is banned in map.
This might not be wrong logically, yet it breaks the compatibility of custom maps. Many maps on "artifact gives banned spells" mechanism to work. A certain spell usually cannot be obtained anywhere except after getting the particular artifact in a trial.

I would recommend reverting the changes in game bug fixes extended.dll.