Version 2.2.2

This version add a Measurement Set write method to UVData objects (UVData.write_ms) and methods to easily set data, nsamples and flags for baselines (set_data, set_flags, and set_nsamples) paralleling the popular get methods for these arrays. It also adds a new from_file class method for UVData and UVBeam objects to support one-line file reading into these objects.

Other improvements and bug fixes are detailed in the changelog.