MFH: r430725

textproc/rubygem-liquid3: new port

• Required for www/rubygem-jekyll

PR: 213500
Reported by: freebsdbug@patpro.net
Reviewed by: mat
Approved by: mat
Differential Revision: https://reviews.freebsd.org/D8975

Approved by: ports-secteam (with hat)