Beta release for madflow

MadFlow is a framework for Monte Carlo simulation of particle physics processes designed to take full advantage of hardware accelerators. Processes can be generated using MadGraph5_aMC@NLO and are then output in vectorized (or tensorized) form by the madflow-provided plugin.

The vectorized output is compiled using the TensorFlow library (hence, tensorized) and then integrated using the VegasFlow library. The PDF interpolation is provided by PDFFlow. All tools are capable of running hardware with different hardware acceleration capabilities, such as multi-threading CPU, single-GPU and multi-GPU setups.

Release for Zenodo

Merge pull request #20 from N3PDF/add_autolink

Add an autolink action