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

Allow a custom timeout when waiting for link text

Allow a custom timeout for wait_for_link_text_present()
Allow a custom timeout for wait_for_link_text_visible()

Update dependencies

Update dependencies:

• pytest>=4.1.0
• pytest-cov>=2.6.1
• requests==2.20.1

Update the Selenium IDE conversion tool

• Update the Selenium IDE conversion tool
• Also update a method for clicking link text inside of dropdown menus

Update virtualenv script and manifest file

Update virtualenv script and manifest file:

• Fix echo commands in a virtualenv Windows batch file
• Update the manifest file

Simplify virtualenv installation by using shell scripts

Simplify virtualenv installation by using shell scripts

Update pytest and pytest-xdist requirements

Update pytest and pytest-xdist requirements

• pytest to 4.0.2 or greater
• pytest-xdist to 1.25.0 or greater

Add submit() method to simplify driver.find_element_by_*().submit()

Add submit(SELECTOR) method to simplify driver.find_element_by_*(SELECTOR).submit()

Update console scripts, styling, and simplify installation

Update console scripts, styling, and simplify installation