2.0.1

• Load certificate chain only if a certificate was specified

2.0.0

• Remove "six" dependency
• Require Python >= 3.6

1.0.5

• Set python_requires to Python >=2.7 or Python >= 3.6 for
  smooth upgrade to upcoming Python3 only.
  This way Python2 only users will stay at this release.

1.0.4

• Validate input data and fix documentation about accepted values (#2)

1.0.3

• Add note about required Logstash versions (#1)
• Improve unit tests

1.0.2

• Add badges to README

1.0.1

• Fix typo in setup.py
• Use distribution "trusty" for Travis builds

1.0.0

• Initial release