refresh styles; update Asciidoctor & syntax to 1.5.0; tweaks
Merge branch 'pr-26-revisions' of github.com:mojavelinux/asciidoclet into mojavelinux-pr-26-revisions

Conflicts:
	src/main/java/org/asciidoctor/Asciidoclet.java
Merge branch 'mojavelinux-pr-26-revisions' into stylesheets