Add lowest dependencies to build matrix
Merge branch 'master' into config/composer-lowest-version

Conflicts:
	.travis.yml
Remove use of getStatusCode + bump Behat version
Remove 5.3.3 from matrix - covered by prefer-lowest build
Merge pull request #587 from ciaranmcnulty/config/composer-lowest-version

Add lowest dependencies to build matrix
Merge branch 'master' into config/composer-caching

Conflicts:
	.travis.yml