Log Message:
lowdown: update to 0.8.2.

Version 0.8.2, 2021-02-19

Fix tables as processed by the difference engine. Tables are now
fully opaque, which means that any changes will result in the
deletion and re-addition of the table. This isn't a good fix, but
it does mean that any tables run through the difference engine will
be sane for output.

Fix metadata to also be properly handled by both the difference
engine and conforming front-ends. This is a bit unusual since
metadata is both processed during parse and also affects document
output, such as in document title. For now use the same rule that
front-ends with metadata differences affecting document layout
(e.g., title) use the new form, if changed.

Lastly, fix footnote reference. When they're emitted in the new
document, the reference definitions are re-ordered in the correct
way to allow -Tms and such to work properly. While here, make sure
that all printed footnote numbers start at one and colours are
properly represented in output.

Split lowdown(1) into lowdown-diff(1) for easier reading.

Properly render tables for -Tgemini as fixed-width displays.

By default, render Gemini link labels using "Excel" format
(hexavigesimal) with the option of using Roman numerals
(--gemini-link-roman) or without labels at all (--gemini-link-noref).
This choice of default may change in later versions, hwoever.