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

Update the SeleniumBase console scripts interface

Update the SeleniumBase console scripts interface

Update example tests

Update example tests
Add test suite for demoing pytest markers