Entrogrammer

Adds some classifiers and a function to grab the entropic scale after calculating the entrogram.

Same as v0.1.0 but fixes error in package deployment due to the use of the unstable Python 3.9 for twining and pip uploading...

Adds 1-D entrogram / entropy functionality

**Note:** Project still in "alpha" but this release adds some preliminary 1-D functionality

Things added:
- Adds `numba`-enhanced functions for computing 1-D entropy at various scales
- Establishes higher-level scripts to calculate things like the global entropy, local entropy at a particular scale, and the entrogram (local entropy at a range of scales normalized by the global entropy)
- Addition of unit tests for all those new things
- Some basic plotting utilities for visualizing the entrogram and local entropy
- Updates to the Readme

Testing the PyPI release system (and hopefully claiming the `entrogrammer` namespace for `pip install entrogrammer`)...