Ti.UI.iOS.createDocumentViewer does not work correctly in 7.1.0
Build the sample project and copy the files below.
If you build the project w/ 7.1.0 on iOS >=11.2 and click on PDF or PNG it works, but DOCX, PPT, video, and XLS do not work and just show 'Loading...' forever. This is also after moving the files to the 'tmp' directory as stated in the docs to account for iOS 11.2.
If you build the project w/ 6.2.2 on iOS >=11.2 all the files open correctly.