"Cheatsheet" for using git properly for our project
Bugfix in some datastructures: if nodes are not written in strictly ascending index-order, a NullPointerException occurs on reading in. Reason: a get(NodeIndex) first looks at the very index position and afterwards at a higher or lower position, according to the index. If a node is stored at a lower position than its index is pointing to, it won't be found.
Test cases include generator BarabasiAlbertGraph now