Bump version to 0.6.0 and apply formatters

LICENSE

mbtrack2/__init__.py

mbtrack2/impedance/csr.py

mbtrack2/impedance/impedance_model.py

mbtrack2/impedance/resistive_wall.py

mbtrack2/impedance/resonator.py

mbtrack2/impedance/tapers.py

mbtrack2/impedance/wakefield.py

mbtrack2/instability/instabilities.py

mbtrack2/tracking/aperture.py

mbtrack2/tracking/element.py

mbtrack2/tracking/feedback.py

mbtrack2/tracking/monitors/monitors.py

mbtrack2/tracking/parallel.py

mbtrack2/tracking/particles.py

mbtrack2/tracking/rf.py

mbtrack2/tracking/synchrotron.py

mbtrack2/tracking/wakepotential.py

mbtrack2/utilities/beamloading.py

mbtrack2/utilities/optics.py