Update splinter to 0.21.0

[pyup-bot]

This PR updates splinter from 0.7.7 to 0.21.0.

Changelog

0.19.0

========

Added
-----

* The methods WebDriverElement.is_visible() and WebDriverElement.is_not_visible() are now available as a replacement for WebDriver.is_element_not_visible_by_css and WebDriver.is_element_visible_by_css.
See https://splinter.readthedocs.io/en/latest/matchers.html#checking-the-visibility-of-elements for more information.

Changed
-------

* When CookieManager.delete() is called with no arguments then all cookies are deleted. This behaviour has been deprecated. CookieManager.delete_all() should be used instead.
* The message for the error raised when a driver's class is not found has been improved.

Fixed
-----

* FlaskDriver.attach_file() has been fixed.
* urllib3 is now always installed, regardless of driver used.

0.18.1

==============================

Changed:
* Set Firefox preferences through options instead of FirefoxProfile

Fixed:
* Use dedicated logger in browser.py to avoid clobbing other Python logging
* Removed required selenium import for error handling, making it possible to use splinter without installing selenium (as long as a selenium driver isn't used)

0.18.0

Added:

* WebDriverElement() now implements the `shadow_root` property. This returns a ShadowRootElement() object to interact with the shadow root of an element.
* Failed driver imports are logged at the debug level instead of silently ignored
* `browser.html_snapshot()` now takes the optional `unique_file` argument. Setting this to False will disable the addition of random characters to the filename.

Changed:

* repr(ElementList()) now returns the repr of the internal container.
* Driver.find_link_by_<x> methods have been removed. Use Driver.links.find_by_<x>.
* Screenshot taken by WebDriverElement.screenshot() now implements Selenium's element screenshot instead of cropping a full page screenshot.
* Flask/Django's back/forward methods more accurately store browsing history
* Official Python 3.6 support has been removed

Fixed:

* 0.17.0 would report as 0.16.0. 0.18.0 reports correctly.
* When using Firefox, extensions can now be installed

0.17.0

* Added parameter to DriverAPI.screenshot and ElementAPI.screenshot to indicate if unique filename should be ensured (https://github.com/cobrateam/splinter/pull/949)
* Added Selenium 4 support

Backward incompatible changes

* Removed python 2.7 support (https://github.com/cobrateam/splinter/pull/952)
* Selenium 3 is no longer installed by default. To install Selenium 3, use the `selenium3` extra argument

0.16.0

* Pin Selenium < 4.0 (https://github.com/cobrateam/splinter/pull/930)
* Add support for Microsoft Edge (https://github.com/cobrateam/splinter/pull/912)
* Accept extra arguments for cookies (https://github.com/cobrateam/splinter/pull/895)
* Fix lxmldriver url join when form action is empty (https://github.com/cobrateam/splinter/pull/900)
* Use io.open() to fix encoding issues on some platforms (https://github.com/cobrateam/splinter/pull/904)
* allow passing options to Firefox webdriver (https://github.com/cobrateam/splinter/pull/892)

Backward incompatible changes

* Remove sending a list of cookie dicts to CookieManager.add() (https://github.com/cobrateam/splinter/pull/799)

0.15.0

* Add more input types to Webdriver clear() (https://github.com/cobrateam/splinter/pull/780)
* Standardize init of CookieManager (https://github.com/cobrateam/splinter/pull/795)
* Add delete_all method to CookieManager (https://github.com/cobrateam/splinter/pull/797)
* Warn user when cookies list is used (https://github.com/cobrateam/splinter/pull/801)
* Added retry_count to get_driver (https://github.com/cobrateam/splinter/pull/754)
* Fix full screen screenshot (https://github.com/cobrateam/splinter/pull/810)
* Add flag to ignore missing fields in fill_form (https://github.com/cobrateam/splinter/pull/821)
* Opening a link in a new tab (https://github.com/cobrateam/splinter/pull/800)

0.13.0

* Patch Remote WebDriver to add retry attempts (https://github.com/cobrateam/splinter/pull/742)
* Add driver attribute to WebDriverElement. This fixes an issue where mouse interaction fails on nested elements (https://github.com/cobrateam/splinter/pull/740)
* Fix WebDriverElement.select and .select_by_text to search only inside the parent element (https://github.com/cobrateam/splinter/pull/729)
* find_by with 0 second wait_time only checks once (https://github.com/cobrateam/splinter/pull/739)
* Fix FlaskClient redirects (https://github.com/cobrateam/splinter/pull/721)

0.12.0

==============================

* `find_by_text` now handle strings with quotation marks (https://github.com/cobrateam/splinter/issues/457)
* `find_link_by` methods are now chainable (https://github.com/cobrateam/splinter/pull/699)
* `ElementList.__getattr__()` no longer hide ElementNotFound (https://github.com/cobrateam/splinter/pull/707)
* Firefox headless mode now handle custom firefox_binary option (https://github.com/cobrateam/splinter/pull/714)
* Firefox driver now respects headless option in subsequent calls (https://github.com/cobrateam/splinter/pull/715)
* `Browser.get_alert()` returns None if no alert exists (https://github.com/cobrateam/splinter/issues/387)
* Retry WebElement.click if Exception is thrown (https://github.com/cobrateam/splinter/pull/725)
* `find_by` methods in WebDriverElement now uses retry mechanism (https://github.com/cobrateam/splinter/pull/727)
* `is_not_present/visible` returns True immediately after not finding anything (https://github.com/cobrateam/splinter/pull/732)
* Accept all valid arguments for Remote WebDriver (https://github.com/cobrateam/splinter/pull/734)
* Allow ActionChains when using Remote WebDriver (https://github.com/cobrateam/splinter/pull/738)

0.11.0

* Browser.get_alert() returns Alert instead of a wrapper object
* Add `browser.html_snapshot` method
* Allow browser.get_iframe() to accept a web element
* Fix mouse_out method
* ElementList is no longer a subclass of list
* Browser.get_alert() now waits for alert to present
* Use 'switch_to.alert' instead of deprecated 'switch_to_alert'

0.10.0

==============================

* Scroll to elements before to execute action chains
* Using `options` instead `firefox_options` to avoid warnings (https://github.com/cobrateam/splinter/pull/634)
* Add support for `*args` parameter in `execute_script` (https://github.com/cobrateam/splinter/issues/436)
* Implement `__ne__` in `StatusCode` (https://github.com/cobrateam/splinter/issues/460)
* Using the new syntax `switch_to_alert` instead `switch_to.alert` to avoid webdriver warnings.
* `CookieManager. __eq__` returns a bool value (https://github.com/cobrateam/splinter/issues/308<Paste>)
* Fix find_by_text to be used inside a chain (https://github.com/cobrateam/splinter/issues/6281)
* Add support for selenium 3.141.0

0.9.0

* `phantomjs` support was removed (https://github.com/cobrateam/splinter/issues/592)
* add options argument for chrome driver (https://github.com/cobrateam/splinter/pull/345)
* (bugfix) avoid element.find_by_text searches whole dom (https://github.com/cobrateam/splinter/issues/612)
* add suport for zope.testbrowser 5+
* handle webdriver StaleElementReferenceException (https://github.com/cobrateam/splinter/issues/541)
* add support for Flask 1+
* add support for seleniu 3.14.0
* update lxml to 4.2.4
* update cssselect to 1.0.3

0.8.0

=====================

* add support for Firefox incognito mode (https://github.com/cobrateam/splinter/pull/578)
* allow return value for `execute_script` to be returned (https://github.com/cobrateam/splinter/pull/585)
* `chrome_options` parameter renamed to `options` (https://github.com/cobrateam/splinter/pull/590)
* removed deprecated `mouseover` method
* raises `NotImplementedError` on `status_code` in drivers based on webdriver
* `phantomjs` is deprecated (this driver will be removed in 0.9.0)

Links

• PyPI: https://pypi.org/project/splinter
• Changelog: https://data.safetycli.com/changelogs/splinter/
• Repo: https://github.com/cobrateam/splinter