unittest includes by default all module-level classes that inherit
from TestCase and implement at least one method starting with 'test'.
Since it doesn't provide a convenient way for excluding TestSuites,
we need to manually filter out the unwanted testing of our test base
class itself.
This bot depends on PyDictionary, which isn't very well-implemented
or well-maintained. PyDictionary's dependency on goslate and
goslate's dependency on concurrent.futures has been known to cause
problems in Python 3 virtualenvs. This bot has also been the
source of disruptive BeautifulSoup warnings. Since this bot is only
meant to be an example bot, and for all the above reasons,
it makes sense to remove this bot. The cons of debugging the above
issues outweight the pros of having the bot at all.
Instead of discovering unit tests using loader.discover() by passing
it a set of starting and top level directories, we now discover
unit tests by loading them from specific test module objects. This
makes it easier to include and exclude specific bots from testing.
