0.4.5
Another batch of November bug-fixes:
@nsmith- made mixin classes derived from a decorator pickleable (#542).
@ianna fixed a bug in sort/argsort (#524) and concatenate (#548).
@reikdas added a script to clean up generated files (#556).
@jpivarski generalized ak.where to take a non-NumPy condition (#544), implemented __contains__ in and out of Numba (#547), np.array(ak.Array) in Numba (#550), removed the right-broadcast from ak.with_field (#553), implemented ak.to_regular and ak.from_regular (#551), updated the GitHub issue templates, and fixed a bug affecting Coffea (scikit-hep/coffea#372, PR #558).