benchmarking

Various characters (e.g. |) if used in a Params will end up invalidating the generated markdown, causing it to render incorrectly. It'd be helpful if benchmarkdotnet could escape the markdown output, e.g. output \| instead of |.

For different use cases, like bencheeorg/benchee_html#10 it'd be great to have statistics about statistics - what I'd call "meta statistics" - although there's probably some better real statistics name for this :)

What should be in there (that I know of so far):

• job size (how many jobs are in there)
• minimum of run times over all jobs
• maximum of run times over all jobs

This should be