Release 1.4.1 - Mishka & Chizhik fly on a rocket

This release provides fixes for regressions introduced in 1.4.0 and affecting some setups.

Mishka & Chizhik were two dogs launched into suborbital flight, and safely recovered, by Russia on August 15th, 1951, in preparation for the Sputnik missions.

1.4.1 Contributions:

• Robbie Harwood (3):
  Check at top level for python-requests{,-kerberos}
  Fix behavior of NULL ccname for cookie creation
  Ensure gssapi_session actually contains MagBearerToken
• Simo Sorce (2):
  Add compatibility with OpenSSL 1.1.0
  Release 1.4.1