pytest compared to built-in unittest does not discover test suites based on a
directory being marked as a module, instead matching against the basename of a
file to determine whether it is a test suite or not.
Implemented Rabin-Karp rolling hash class abstraction.
After testing muliple algorithms for efficient substring searching in a stream
abstracted by a ring buffer, I've dropped the idea of using KMP in favor of
implementing my own algorithm based of the Rabin-Karp rolling hash algorithm.
