Federated num_epochs_per_round

Important information

In the configuration files (e.g. configs/federated/*.yaml) for Federated Learning, make sure to check that you use the following parameters as follows:

• totalEpochs, you MUSN'T use, this will be removed later, after this years' course has finished. This parameter was also not used before this release, but keep this in mind. An warning will be logged during execution if you do access this.
• rounds, the number of communication rounds, so how many times the Federator node will sample and contact Client nodes.
• epochsPerRound, the number of epochs the `Clients perform within a communication round.

What's Changed

• Resolve federated learning rounds per epoch by @JMGaljaard in #41. Thanks @AbeleMM for spotting this error.

Full Changelog: v0.2.1...v0.2.2