0.3.1

Remove support to Python 3.4 and declare explicit support to Python 3.8.

0.3.0

• Fix 'ordinal' metric, which was giving a slightly different value for alpha.
• Remove support to Python 3.3.

0.2.2

Fix ordinal measure, which was not using squares.

0.2.1

Fix alpha not working when reliability_data is a NumPy matrix.

0.2.0

Breaking change: alpha function supports either reliability_data or value_counts as input (in that order).