import entries for 1.6.0 and 1.6.1 releases into CHANGELOG [skip ci]
import entries for 1.6.0 and 1.6.1 releases into CHANGELOG [skip ci]

mojavelinux/asciidoctor-pdf,asciidoctor/asciidoctor-pdf,asciidoctor/asciidoctor-pdf,mojavelinux/asciidoctor-pdf