Update jcalderonzumba/gastonjs from v1.0.3 to v1.2.0

[violinist-bot]

If you have a decent test suite, and your tests pass, it should be both safe and smart to merge this update.

Here is a list of changes between the version you use, and the version this pull request updates to:

• 575a9c1 Merge pull request Feature/ds 296 view topic goalgorilla/drupal_social#25 from dennisverspuij/windowing
• 5208a99 Added test case for windowing methods manipulating stacks of windows
• da75d24 Fixed for tests
• 8b078a8 Added note to Poltergeist.Browser.close_window that closing a page also closes any child pages, that is windows with new window names openend from that page. A regular web browser won't do that, but Qt's QWebPage does.
• d2b0a56 Fixed windows opened from secondary windows were not tracked and exposed through window related methods getPageByHandle, window_handle, window_handles, switch_to_window and close_window
• 5197032 Merge pull request DS-132 - As LU I want to cancel my account goalgorilla/drupal_social#23 from dennisverspuij/proxying
• e9ce856 Added \Zumba\GastonJS\Browser::setProxy() for (un)setting web proxy to be used by PhantomJS
• cf224c2 Improved comments for set_proxy
• 405f494 Added set_proxy command to enable (un)setting proxy. Requires Phantom v2+ (see Added setProxy function ariya/phantomjs#11829)
• 130b448 PHP7 tests are no longer consider acceptable fails
• 4d7fe5f Merge pull request Feature/ds 263 document layout goalgorilla/drupal_social#21 from ganchclub/master
• 79f7836 update docs
• c415baa refactor resourceTimeout
• 0c53abb resourceTimeout command - tests added
• c6ef433 set timeout for resource file while loading the page

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