Added workaround for rainbow text artifacts
Added workaround for rainbow text artifacts

https://github.com/TomasMikula/RichTextFX/issues/145 was the way I fixed some rainbowing of all text in the raw and rendered views for Asciidoc text. Thought I'd note it here so it helps others.
lefou/AsciidocFX,gastaldi/AsciidocFX,asciidocfx/AsciidocFX,asciidocfx/AsciidocFX,gastaldi/AsciidocFX,lefou/AsciidocFX,asciidocfx/AsciidocFX,LightGuard/AsciidocFX,LightGuard/AsciidocFX,gastaldi/AsciidocFX,LightGuard/AsciidocFX,asciidocfx/AsciidocFX