Allow URLS that start with "://" for open(URL)

This fixes #494
Allow URLS that start with :// for the open(URL) method

If you copy/paste a URL such as ://google.com into a web browser, the browser automatically converts the URL to https://google.com. But if you use the webdriver get(URL) method for URLs that start with ://, you'll get the following error:

selenium.common.exceptions.WebDriverException:
Message: unhandled inspector error:
{"code":-32000,"message":"Cannot navigate to invalid URL"}

Now the SeleniumBase open(URL) method (which wraps driver.get) automatically adds the https to URLs that start with :// to prevent the error.
As a bonus, you can now make your Python code lines 5 characters shorter if they use the open(URL) method for https URLs.

Automated Visual Testing (2nd edition)

Automated Visual Testing (2nd edition)

• Improve automated visual testing
• Better handling of page scrolling to elements
• Better exception handling around log folders
• Update pytest and wheel

See https://github.com/seleniumbase/SeleniumBase/tree/master/examples/visual_testing for examples and the ReadMe!

Refresh "wheel" and "tqdm" dependencies

Update Python dependencies:

• wheel>=0.34.1
• tqdm>=4.42.0

Refresh Python dependencies

Refresh Python dependencies:

• pip>=20.0.2
• setuptools-scm>=3.4.3
• packaging>=20.1
• pdfminer.six==20200124;python_version>="3.5"

Treat the new Chromium Edge browser like Chrome

Treat the new Chromium Edge browser like Chrome

• Because Edge is Chromium-based now, it works like Chrome

Also Update pip, urllib3, and pdfminer.six dependencies:

• pip>=20.0.1
• urllib3==1.25.8
• pdfminer.six==20200121;python_version>="3.5"

Update Python dependencies

Update Python dependencies:

• pytest>=5.3.4
• setuptools>=45.1.0;python_version>="3"
• setuptools-scm>=3.4.2

Improve demo-mode on mobile device tests

Improve demo-mode on mobile device tests

Update the XPath-to-CSS converter

Update the XPath-to-CSS_Selector converter

Improve ``select_option_by_*()`` methods

Improve select_option_by_*() methods

• Improve select_option_by_text(SELECTOR, TEXT)
• Improve select_option_by_index(SELECTOR, INDEX)
• Improve select_option_by_value(SELECTOR, VALUE)
• Also update pytest and setuptools-scm dependencies

Small updates / Improve reliability

Small updates / Improve reliability:

• Update get_page_title() and combine get_title() into it
• Add skip_test() to avoid using the camelCase version
• Improve reliability for the html_inspector