resolves #569 add proper grid and frame styles for tables
resolves #569 add proper grid and frame styles for tables

asciidocfx/asciidoctor,pepijnve/asciidoctor,glamouracademy/asciidoctor,benignbala/asciidoctor,gjtorikian/asciidoctor,cuit-zhaxin/asciidoctor,yukisan/asciidoctor,anthonny/asciidoctor,benignbala/asciidoctor,mjang/mj-asciidoc,asciidocfx/asciidoctor,neontapir/asciidoctor,pepijnve/asciidoctor,yukisan/asciidoctor,mjang/mj-asciidoc,anthonny/asciidoctor,neontapir/asciidoctor,cuit-zhaxin/asciidoctor,glamouracademy/asciidoctor,gjtorikian/asciidoctor