Update parameterized version

Update parameterized version:

• Set parameterized>=0.7.0

Update examples

Mostly updating example tests to use a non-camelCase format for assertions.

• self.assert_true() can now be used in place of self.assertTrue()
• self.assert_equal() can now be used in place of self.assertEqual()

Save the URL with exported SeleniumBase tours

Tour update:

• Save the URL with exported SeleniumBase JavaScript tours

Refactoring and new methods

Refactoring and new methods:

• Git-ignore the .vscode folder
• flake8 upgraded to v3.7.4
• Simplify BeautifulSoup usage
• Remove old deprecated methods
• Deprecate scroll_click() because click() already scrolls
• Add methods to avoid using camelCase in Python

Update pytest requirements and a few other things

Update pytest requirements and a few other things:

• Updated requirements: pytest>=4.2.0, pytest-xdist>=1.26.1, flake8==3.7.3.
• Add option to raise a Python Exception immediately when specifying an invalid proxy string, rather than waiting to display a warning message at the end of the test run (without using a proxy server). Usage: --proxy=[PROXY_STRING].
• Disable Chrome local_discovery pop-up notifications, such as "New printer on your network".

Update "parameterized" version

Update "parameterized" version:

• Use parameterized==0.6.3

Replacing deprecated pytest code with new code

Mostly replacing deprecated pytest code with new code to prevent:
PytestDeprecationWarning: the `pytest.config` global is deprecated. Please use `request.config` or `pytest_configure` (if you're a pytest plugin) instead.

The solution involved using sb_config in place of pytest.config.option

Unrelated, there's also a small update to fix a console script used for downloading the selenium server jar file. (It's only needed when you're trying to run your own Selenium Grid)

Improve Messenger methods and a few other things

Improve Messenger methods and a few other things

• Improve methods for posting in-test messages with JS
• Update pytest-html to >= 1.20.0
• Add an example that can be run without the Pytest unittest runner (AKA pure Python)

Update pytest requirements

Update pytest requirements:

• pytest>=4.1.1
• pytest-rerunfailures>=6.0
• pytest-xdist>=1.26.0

Update console scripts and traffic-generation code

Update console scripts and traffic-generation code

• Autodetect "source" for activating virtualenv commands in bash
• Update seleniumbase console scripts menu
• Update traffic-generation code