Selenium

* translate move_by_offset command to w3c
* Update capabilities properly instead of assuming dict structure. Fixes 3927
* Add missing file for Chrome options to API docs.
* Add Chrome options module to API docs.

* Add back the ability to set profile when using Firefox 45ESR. Fixes 3897

* Correct usage of newSession around `firstMatch` and `alwaysMatch`
* Remove superfluous capabilities that are not needed
* Add expected condition that waits for all found elements to be visible (3532)
* Allow methods wrapped by EventFiringWebDriver and EventFiringWebElement (806)
* Dropping `javascriptEnabled` capability for real browsers
* Use W3C check from parent object instead of assuming from capabilities
* Bump example source distribution to match latest release.
* Replace TypeError with KeyError in remote webdriver error handler code (3826)
* When testing Marionette use default capabilities in testing
* Conform to the api of urllib2 for adding header for a request (3803)
* Add `text` key to alertsendKeys parameters for W3C Endpoint
* Location once scrolled into view should use W3C executeScript endpoint not JSONWP
* Fixed the usage information in documentation of "save_screenshot". (3804)
* Add Element Not Interactable exception
* Clean up imports in error handler
* flake8 cleanup

* make w3c execute_script commands unique

* Update window commands to use W3C End points
* Update Alert when in W3C mode to use W3C Endpoints
* Update to new W3C Execute Script end points
* Add setting/getting proxy details to Firefox Options
* Deprecate the use of browser profile when instantiating a session
* Update start session to handle the W3C New Session
* Add get/set window rect commands
* Add InvalidArgumentException
* When passing in `text` to send_keys, make sure we send a string not array
* Fix string decoding in remote connection (3663)
* Fix indentation to satisfy PEP8
* Try use old way of setting page load timeout if new way fails. Fixes 3654
* fix file uploads for Firefox
* Run unit tests on Python 3.3, 3.4, and 3.5 (3638)
* Fix indentation in double_click.
* Fix non-W3C page load timeout setting.

* Fix encoding of basic auth header when using Python 3 Fixes 3622
* Add initial unit test suite
* Update W3C Timeout setting to be in line with the specification
* support.ui.Select class inherits from object (3067)
* fix bug in proxy constructor that some properties are not proper set (3459)
* Fix flake8 issues (3628)