glonass

This will remove the need for generating a .netrc file before using this library

see python example for ftp-ssl here:
https://cddis.nasa.gov/Data_and_Derived_Products/CDDIS_Archive_Access.html

from ftplib import FTP_TLS
import sys

email = sys.argv[1]
directory = sys.argv[2]
filename = sys.argv[3]

ftps = FTP_TLS(host = 'gdc.cddis.eosdis.nasa.gov')
ftps.login(user='anonym

As per #11 we wanna ensure max test coverage, as of now sentences/utils.rs is not at all tested but shared across all sentence parsers and thus a source for very common bugs.

Should be quite easy to do and might be an easy way for an individual to look into tests and make a small open source commit unless someone really wants this in the crate quickly.