- Added a <space> element to fix the occasional gobbled space.

- Added some spacing control to stop words getting jammed up against each other in LaTeX. (Only occurs when two elements are adjacent.)

- Added pi, sigma and rho maths symbols (relational algebra project, restrict and rename). ...

- Changed <typewriter> element to use <TT> in HTML instead of <CODE>.

- Added some deprecation messages. ...

- Rewrote image handling to use base-path parameter.

- Revamped document inclusion. ...

- Deprecated <latex-input>.

- Added underline support.

- Cleaned up formatting of paper codes.

- Removed <P> tags from "DT" template (invalid HTML).

- Added "question" template to stop bogus HTML generation when showanswers is switched on.

- Fixed fractions in HTML.

- Added missing \ensuremaths to <fraction>, <variable> and <function> templates.

- Added @align to <P>. ...

- Added "fill" option to @size in <vskip>.

- Changed "-72dpi" to "-96dpi" in the zoomed image template.

- Added blank lines after end of list environments to avoid weird numbering problem in derived LaTeX output.

- Added <pagebreak> and <newpage> synonyms for <page-break>. ...

- Added space around LaTeX tabulars so that they are placed in their own paragraph.
- Added <center> template.

- Added missing '/' to image paths (used to work?).

- Fixed display math in <item>.

- Removed extraneous "/" from image paths in LaTeX.

- Added right-arrow and left-arrow maths operators.

- Removed support for external environment.xml files.

- Tidied up default tabular alignment for LaTeX. ...

- Added <multi-column> templates.
- Changed <columns> to <tabular-columns> for consistency.
- Ensured distinction between tabular-columns/column and
  multi-column/column.
- Changed names of a few templates.

- Fixed header cells in HTML tabulars using an attribute value template.

- Added "percent" as an alternative for "percent-sign".

- Fixed figure and table numbering to not count preceding figures ...

and tables in <answer> when showanswers is off. Still seems to
  count them in <omit> though (and probably also <comment>).

- Images in HTML version now default to 96 dpi. ...

- Resolved merge conflict.

- Ensured that the content of <figure> and <table> is properly centered in HTML. ...

- Added <raw-latex> and <raw-html> as alternatives to <raw-code format="xx">.

- Added "sans-serif" template. ...

- Added "vskip" template.

- Deleted explicit math mode and associated operators after remembering about \ensuremath. ...

- Added <underscore> element for underscores in non-code contexts.

- Added "br" to "newline" template. ...

- Added "dollar-sign" to "dollar" template.
- Changed footnotes into endnotes (moved into meta-stylesheet).
- Renamed modes of "multi-row", "multi-column" cell templates to
  "latex-multi-row", "latex-multi-column", etc., to make it clearer
  that they're only intended for LaTeX.
- Added support for table column headers (TH in HTML). Still needs a
  little work in the main cell template.
- Fixed up custom image directories in the "image" templates. (May
  need further rationalisation.)
- Added >, <, >=, <= operators.

- Changed output LaTeX formatting of verbatim-inside-minipage for better readability ...

- Removed some old comments and commented-out code