Cards 2.2 is out!
Cards 2.2's big new feature is a vastly improved printing system. It also brings improved syncing, and big bug fixes for macOS Sierra.
It will also be the last major release to support macOS 10.10 Yosemite and 10.11 El Capitan, iOS 8 and 9, as well as tvOS 9. There are features and tools which I would like to make use of in newer OS's that would be difficult to maintain backwards compatibility.
This update should've been out quite awhile ago, but this last year has been very rough personally. Things got dropped and I am sorry for that. Cards and Annals moving forward will move towards more shared code, and improvements to syncing, usability, and better testing.