1.0.2

• Fix 'NoneType' object is not iterable when trying to iterate over absent parts key

1.0.1

• Support missing subject header

1.0.0

• Support batch modifying messages

0.3.0

• Support sending messages

0.2.0

• Support adding and removing labels

0.1.0

This is the very first release. It is not stable yet but might work 😄