Remove added frame on unload.
Merge pull request #929 from Gozala/hotfix/unload-frame

Bug 859860 - Remove added frame on unload. r=@ochameau
Merge pull request #839 from ZER0/contentStyle/837494

fix Bug 837494 - re-implement `contentStyle*` using the new nsIDOMWindowUtils methods r=@gozala
Merge pull request #883 from ZER0/credits/853341

Bug 853341 - Add Timothy Guan-tin Chien and Jordan Santell as contributors in credits.md
Bug 858935 - Intermittent test-tabs.testOnPageShowEvent | Page was not cached after 5s
Bug 859009: URL is valid type for panel.contentURL
(cherry picked from commit cd5bd30c99ac4050e735344d2b3cfb3fae82af1a)

Conflicts:
	lib/sdk/content/loader.js
Merge pull request #935 from erikvold/859009-2

Bug 859009: panel.contentURL accepts a URL instance r=@gozala
Merge pull request #934 from ochameau/bug858935

fix Bug 858935 - Intermittent test-tabs.testOnPageShowEvent | Page was not cached after 5s, a=@ochameau
Environment variable deletion shouldn't fail in strict mode code (and should return true in non-strict code)
Merge pull request #937 from Gozala/bug/env@861304

fix Bug 861304 - Environment variable deletion shouldn't fail in strict mode code r=@gozala
Bug 858970 - Wait for tab close before switching to next test in testWindowTabsObject_alt.
re-factored tests for unique ids to use promises.
Merge pull request #931 from canuckistani/bug_859637

Bug 859637: re-factored tests for unique ids to use promises. r=@ochameau
Documentation for lang/functional module
Merge pull request #933 from jsantell/func-documentation

fix bug 859507: Document lang/functional module, r=@wbamberg
Merge pull request #941 from ochameau/bug858970

Bug 858970 - Wait for tab close before switching to next test in testWindowTabsObject_alt. r=@erikvold
Bug 858954 - Wait for delayed startup before touching browser window.
Merge pull request #939 from ochameau/bug858954

Bug 858954 - Wait for delayed startup before touching browser window. r=@erikvold
Bug 732294 - Panel constructor lacks a way to set position of panel other than "centered"

Implemented the API described in [JEP Panel Positioning](https://github.com/mozilla/addon-sdk/wiki/JEP-Panel-positioning) and discussed in etherpad.