[BUG]: Issue processing a file

[asreimer]

• Python 3.8 environment
• numpy 1.20.1
• resolvedvelocities v1.1.0-alpha
• File: IPY27_Tracking_v03/20190402.003/20190402.003_lp_10min-fitcal.h5

    Traceback (most recent call last):
      File "/opt/virtualenvs/dataproc/bin/resolvedvelocities", line 8, in <module>
        sys.exit(main())
      File "/opt/virtualenvs/dataproc/lib/python3.8/site-packages/resolvedvelocities/run_resolve_vectors.py", line 85, in main
        rv.transform()
      File "/opt/virtualenvs/dataproc/lib/python3.8/site-packages/resolvedvelocities/ResolveVectors.py", line 184, in transform
        self.mlat = np.insert(mlat,replace_nans,np.nan)
      File "<__array_function__ internals>", line 5, in insert
      File "/opt/virtualenvs/dataproc/lib/python3.8/site-packages/numpy/lib/function_base.py", line 4672, in insert
        old_mask[indices] = False
    IndexError: arrays used as indices must be of integer (or boolean) type