Add filter for get_attached_file() - use S3 URL by default but ability to copy back the file to be used by certain processes
Allow the Regenerate Thumbnails plugin to copy back file to server for processing
Merge branch 'develop' into get-attached-file-support
Add contributing file
Return URL earlier if issues with filesystem API
Merge pull request #170 from deliciousbrains/get-attached-file-support

Support for get_attached_file()
Merge pull request #177 from deliciousbrains/contributing-file

Add contributing file
Merge branch 'develop' into improved-ui-120
Don't break custom path over lines
Remove 'Add' from Year/Month title
Allow switch toggle to be click anywhere
Custom path clarity, when off no path and cannot be on with empty custom path