Explain in Preface the content and making of the document

[christophM]

The preface should explain what the content of this book is. It should also give some context:

• Each chapter is from a different author.
• There are common chapter for the method introductions.
• The goal was to work out the limitations of various interpretabillity methods.
• The work was done in a student seminar at the LMU.
• Each chapter was supervised by young researcher

[christophM]

Also list all supervisors and authors.