Make im4j the default processor
Merge pull request #695 from guardian/default-to-im4j

Make im4j the default processor
Fix specificity issue with logo png fallback on HiDPI devices #678
Omptimised guardian 2x logo to reduce file size
MIT
Apache 2.0
Merge pull request #697 from guardian/license

License
Allow 'naked' image transforms
Galleries using i.guim.co.uk
Merge pull request #701 from guardian/dynamic-galleries

Dynamic galleries
Update CONTRIBUTING.md

Added a specific note about external contributions. We'll need a CLA.
Update CONTRIBUTING.md
Merge pull request #696 from guardian/logo-fix

Fix specificity issue with logo png fallback on HiDPI devices #678
Merge branch 'master' into jsonp-all-pages