Bump version from 4.0.0 to 5.0.0

This is to reflect the fact that the previous commit introduced a
backwards-incompatible change.

Suppress webdriver-manager's log output

Set version number for release 3.2.6

Fix caching of chromedriver in start_chrome(...)

Fix PyPI installation

It failed with:

    ERROR: Packages installed from PyPI cannot depend on packages which
    are not also hosted on PyPI.

Set version number for release 3.2.2

Fix error in start_chrome

Set version number for release 3.2.0

Set version number for release 3.1.0

Set version number for release 3.0.9