4.31.1 - Update options, methods, and docstrings

Update options, methods, and docstrings

• Add option to use Chrome's old headless mode
  --> This resolves #3162
• Update methods
  --> Add is_alert_present()
  --> Update existing methods
• Update comments and docstrings of SB() and Driver()
  --> Add types to docstrings
• Update console scripts
  --> This fixes the SeleniumBase logo printed when the screen width is under 66 characters
  ----> (The logo is printed when typing sbase or seleniumbase on the command-line)