Docutils: Documentation Utilities Code

Documentation update/fixes.

Describe intended behaviour and add cross-links to the related TODO list item
for possible future "footnotes" and "citation" directives.

Correct terms in "image" directive documentation.

Simple example for auto-nubered footnotes.

version 0.22.3b1.dev

rST parser: allow for combining characters in grid tables.

Ignore combining characters when extracting a grid table block and
when parsing the grid table structure.
Allow for combining characters when extracting 2d-block with cell content.

Missing part of the fixes in [r7231].

Fixes [bugs:#128] and [bugs:#512].

Simplify `utils.column_indices()`.

Documentation fixes.

Drop *rc1 release entries from HISTORY and RELEASE NOTES.
Add missing period.
Fix link target. Thanks to Dmitry Shachnev for reporting and patch #215.

release 0.22.2

version 0.22.3b1.dev

tagging release 0.22.2

version 0.22.2

Fix: commented out py2 code