rulebook: Aventurische Bibliothek

[Nando Neck]

The following content is contained in the book:

Type	number	pages
books	195	11-126
news papers	54	136-137
spab	5	152-153
tradesecret	6	153
spells (prerequisites)	1	153

spell enhancement need special prerequisite: https://bitbucket.org/Nargaff/the-dark-aid/issues/339/tradesecret-groups

we need a specialability and tradesecret as prerequisites for the enhancements