Bump version to 2.2.0

Bump version to 2.0.1 (fix non-alphanum)

v2.0.0 Shortcodes

Added examples of customized LoA header in docs

This new page shows both how to use the new "loa_header_classes" option,
for example to create an unnumbered section (as per Issue #6), and also
how to leverage previous existing options to disable the header and
re-create it manually, in order to fully customize it.

Documented the "alphabetical-case-insensitive" sorting

Better formatting for the Md report

For some reason, GitHub does not like putting Markdown in a fenced code
block. The Markdown is not considered as "text" (to be written as-is),
but interpreted as Markdown.
However, using indented code blocks instead works: Markdown is not
interpreted. The only drawback is that there is no clear visual
indication of a code block (when compared to a fenced block),
and we cannot specify the language, so there is no syntax
highlighting.

Also, removed the heading slug in the test details (for example,
the `{#1-simple}` in `# 01-simple {#1-simple}`).
This is not parsed correctly by GitHub (appears on the header line),
so we remove it. The ability to link directly to a test might be
impaired...