Really more a bug than a feature request:
As in the previous version of Gingko:
Copy and paste on the mac does not work.
This means: I cannot copy and paste from other programs and I cannot copy and paste from inside Gingko.
You should probably check the framework you are using for help with that as this should be a very common topic.
I am using Mac Os Sierra (10.12) . I used to have El Capitan (10.11)