don't require open-uri-cached if already loaded
don't require open-uri-cached if already loaded

benignbala/asciidoctor,anthonny/asciidoctor,pepijnve/asciidoctor,cuit-zhaxin/asciidoctor,glamouracademy/asciidoctor,neontapir/asciidoctor,glamouracademy/asciidoctor,yukisan/asciidoctor,anthonny/asciidoctor,yukisan/asciidoctor,asciidocfx/asciidoctor,benignbala/asciidoctor,cuit-zhaxin/asciidoctor,pepijnve/asciidoctor,neontapir/asciidoctor,asciidocfx/asciidoctor