#7 Time for some unit tests

[Max]

Unit tests for the regex-based mechanism for finding escape sequences and text to render.

[Max]

Ansi parsing mechanism has been refactored to be testable, and unit tests implemented for it. Changeset https://sourceforge.net/p/wpfansiview/code/ci/b074073e36730253c57172c40eba07c4f94124b8/