amend #602 rename .group to .float-group
amend #602 rename .group to .float-group

- also add none as bullet type

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