Feature request: Addition of Chi-Squared Entropy Algorithm

[meeas]

Summary

Would love a Chi-Squared option to measure entropy. Implementation would be the same as your current Shannon entropy feature. Could look at the "ent" tool in Linux for examples and output comparisons.

Example

from Linux:
$ echo "This string is way too short of an example input to be of much value" | ent
Chi square distribution for 69 samples is 1329.72, and randomly
would exceed this value 0.01 percent of the times.

Possible solutions

Environment

[n1474335]

Great idea. If anyone would like to have a go at this please do, otherwise I'll do it myself when I get a spare minute.

[mattnotmitt]

Taking a look now, though I'll probably hit a brick wall since my C is very rusty.
EDIT: Yeah I've got no idea what's going on in that code, someone else is going to have to take a stab at it.

[n1474335]

Closed in #217