Created attachment 207407 [details]
Depends on libtermbox (https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240522)
Quick note: you do not have to set PORTREVISION. See https://www.freebsd.org/doc/en_US.ISO8859-1/books/porters-handbook/book.html#makefile-naming.
Also, it is unnecessary to use both GH_TAGNAME and DISTVERSION.
I'll update the port to v1.4.0 btw, as I see it was release recently.
Let me know if you'd prefer to keep it at 1.3.0.