Pandoc's LaTeX writer emits \begin{longtable} for every pipe-table, but
longtable is full-page-width and errors out inside a \twocolumn column.
Post-process the pandoc output to rewrite each longtable block into a
column-fitting \begin{table}\begin{tabular} pair: hoist the caption above
the tabular, drop the pagination machinery (\endfirsthead/\endhead/\endlastfoot
+ duplicate header), and move \bottomrule from the foot block to the end of
the body rows.

Bumps to 0.0.12.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>