Update README.md

Add missing type hints in function arguments

Add active class to second navigation element

Python eval mathrepl

Intro pandas merge

remove the property .data

Add examples for python-scipy-cluster-optimize

Newer versions of SciPy are not deterministic about which code goes to
which cluster category. Uses argmin to get the index of the lowest
indexed unique code. From the setup of the model, this is the ham
category. Likewise, the highest indexed unique code is the spam
category. The code for the unknown value is then the one value remaining
that hasn't been used yet from 0, 1, or 2.

With 1000 shares, the solution does not exist. n_shares = 15 matches the
article.

Most functions had type hints for their arguments except for `SpaceShooter.__init__` and `SpaceShooter.on_key_pressed`.

[binary-search] Change article title, add usage section to README

Jima python bindings

Adding the example program files that go along with the python-sqlite…