Selenium

* Fix basestring reference to work with python 3. Fixes 1820
* Correct Length conditional when filtering in PhantomJS. Fixes 1817
* Fix send keys when using PUA keys e.g. Keys.RIGHT 1839
* Fix cookie file leak in PhantomJS 1854
* Use the correct binary path when using Marionette
* Fixed: Unhelpful error message when PhantomJS exits. (2173 2168)
* Fix broken link to python documentation (2159)
* Attempt to remove Firefox profile when using Marionette
* Ensure all capabilities are either within desiredCapabilities or requiredCapabilities
* Correct the expected capability name for the Firefox profile
* Add Firefox options to capabilities
* Visibility_of_all implies it only returns elements if all visible (2052)
* Find visible elements (2041)
* Pass the firefox_profile as a desired capability in the Python client when using a remote server
* Avoid checking exception details for invalid locators due to differences in server implementations
* Handle capabilities better with Marionette and GeckoDriver
* Updated the maxVersion of FirefoxDriver xpi maxVersion to work with Firefox 47.0.1
* Remove Selenium RC support

* Adding Options object for use with Python FirefoxDriver
* Fixed improper usage of super in exceptions module
* create a temp file for cookies in phantomjs if not specified
* Pass in the executable that FirefoxBinary finds to the service if there isn't one passed in as a kwarg or capability
* Applied some DRY and extracted out the keys_to_typing()
* Fix deselecting options in <select>

* Fixing case where UnexpectedAlertException doesn't get the alert_text in the error object
* Firefox: Actually use launch_browser timeout Fixes 1300

* correcting bundling issue missing README.rst file

* Firefox updates (see java changelog)

* Fixing error message handling. Fixes issue 1497
* Fixing error message handling. Fixes issue 1507
* Update webelement to handle W3C commands for size/location and rect
* rewrite click scrolling tests to match the Java ones