Simple LaTeX parser providing conversion to/from unicode

 Provides a "unicode_to_latex()" function which converts a unicode
 string into LaTeX text and escape sequences, and a module with a
 series of routines that parse the LaTeX structure of given LaTeX code
 and return a logical structure of objects suitable for converting
 into another format such as plain text. The functionality is
 also exposed via command-line scripts (latexencode, latex2text,
 latexwalker).