Merge branch '1.6'

Conflicts:
	package/codecept.phar
	src/Codeception/Codecept.php
waitForElementChange() callback return value was not being used
Merge pull request #667 from wheelsandcogs/wait-for-element-change-fix

waitForElementChange() callback return value was not being used
version bump
Merge branch '1.7' of github.com:Codeception/Codeception into 1.7
version bump
release branch changed to 1.8
Merge branch 'master' of https://github.com/Codeception/Codeception

Conflicts:
	package/codecept.phar
	src/Codeception/Codecept.php
	src/Codeception/Command/Base.php
Merge branch '1.7' of https://github.com/Codeception/Codeception

Conflicts:
	package/codecept.phar
	src/Codeception/Codecept.php
	src/Codeception/Module.php
	src/Codeception/PHPUnit/Constraint/CrawlerNot.php
	src/Codeception/Util/Mink.php
Merge branch '1.8' of https://github.com/Codeception/Codeception

Conflicts:
	package/codecept.phar
	src/Codeception/Codecept.php
	src/Codeception/Module.php
code cleanup and code style (PSR-2) fixes in commands
fix test
Merge pull request #693 from tiger-seo/master

(2) fixing November 9th merge issues, code style fixes, small refactrorings