Setting ImplicitParagraph has no effect

As far as I understand, setting ImplicitParagraph to false should prevent markdig from wrapping rendered HTML in a <p>.

However, the following test does not behave as expected

            var pipeline = new MarkdownPipelineBuilder().Build();
            var writer = new StringWriter();
            var renderer = new Markdig.Renderers.HtmlRenderer(writer);
            renderer.ImplicitParagraph = false;
            pipeline.Setup(renderer);
            var foo = Markdown.ToHtml("test", pipeline);

            // foo is "<p>test</p>\n" and not "test"

Furthermore, this parameter (and the couple more similar) are only interesting at render time and as such, they should be directly settable -- the user should not be forced to go through 5 lines of setup to set a basic option, such as when rendering a snippet. This also makes them basically undiscoverable.

Start with the supplied C# reproduction using MarkdownPipelineBuilder, HtmlRenderer, ImplicitParagraph, and Markdown.ToHtml. Trace why setting HtmlRenderer.ImplicitParagraph to false still produces paragraph tags, and review the other render-time options mentioned in the issue. Done means the reproduction omits the wrapping tags and render-time options can be set directly as requested.