YaCy contributor guidelines

Thank you for contributing to YaCy! We appreciate all contributions, no matter how small.

Please create a pull request.

Some tips to make it more likely for your pull request to be accepted:

Don't make big changes without discussing it first.
- Don't make big refactorings without any new functionality.
- Don't remove functionality unless we discussed that somewhere.
Don't change whitespaces unnecessarily.
- Don't change line endings (LF/CRLF).
- Don't change formatting (spaces, tabs).
Don't commit code you don't understand.
- Don't commit code without testing its function (and a bit of debugging).
Don't put someone else's name in your copyright statement (don't put other people's name in the copyright statement if you add a new class; put your own name).