Suggestion: New env tag options ",hide": make the field invisible if someone try to print it

[obo-cell]

This optional tag option will be great to hide keys, API & other private stuff...

[obo-cell]

"env is considered feature-complete.

I do not intent to add any new features unless they really make sense, and are requested by many people.

Eventual bug fixes will keep being merged." - by the author. Well, I will wait for support from others