Moving storedVars from test case leven to test suite level. Fixes issue 2845
Fixing swith to window by var= locator (RC). Fixes issue 3270
Disabling keep-alive header on .NET driver service startup/shutdown requests

Fixes issue #6457.
Fixing condition in a test to wait for the result
Fixing JSON converter (RC). Fixes issue 3185
Add support for using 'with' block pattern with Action chains and Touch actions.

Ex:
with ActionChains(driver) as c:
  c.move_to_element(menu)
  c.move_to_element(submenu)
  c.click(submenu)
  c.perform()
Merge branch 'master' of https://github.com/SeleniumHQ/selenium