updated release notes and readme
keine ahnung, ich glaube ausgabe von graphen aus Tests
test for reproducing #53
small code improvements based on IntelliJ recommendations
supressed warnings for classes that only exis for test purposes
added test for references to static fields
fixed a test, that I broke by accident

The breaking should never been committed ...
The actual test for static field references
formatting
fixes #53
Merge branch 'master' of github.com:schauder/degraph