Unwrap a sequence of longitudes or headings in degrees.
lon : array
Longtiudes or heading in degress. If masked output will also be masked.
centered : bool, optional
Center the unwrapping as close to zero as possible.
copy : bool, optional.
True to return a copy, False will avoid a copy when possible.
unwrap : array
Array of unwrapped longtitudes or headings, in degrees.