Unreleased alpha versions

Version 0.1.2:

Breaking changes:

• Change operators used for shortcuts.
• Rename fimage to function2.

New:

• New plot types: bars, columns, histogram, vistogram, histogram2,
  function.
• More documentation.
• Generated markdown documentation.
• Additional examples.

Dependencies:

• Make example dependency on scikit-learn explicit.

Version 0.1.1:

New:

• Add type annotations.

Dependencies:

• Add mypy as a dev dependency.
• Remove dependency on unscii (bundle the specific version of the font we
  want).

Internal:

• Refactor from long single-file script to multi-file library.

Version 0.1.0

Much unstructured development.