* Use inverse of `is_bft` function for checking in `average_higher`.
* Inline in `NetworkDimension`.
* Check more invariants when averaging network sizes.
* Added test that finds shrinking regression of `NetworkDimension`.
* Use bijection for shrinking of network dimensions.
* Fix types on dimensions.
* Hide `size` and `faulty` behind accessor methods.
* Make limits dependant on input size.
* Fixed clippy lints.
* Simplify averaging.
Marc Brinkmann