parseLatex 0.3.0

Added stdbool.h to the includes for compatibility with older gcc. (Thanks to Dirk Eddelbuettel for the report and PR #2).
Added a configure script to check for bison (on Unix-alike only).
Adjacent math environments were treated as a syntax error.
\let is now handled the same way as \def: the next two tokens are not considered for evaluation.
Added arguments defcmd and defenv to parseLatex() to allow the user to specify defining macros. These names are also now allowed in the magic comments.
Spaces between a verb macro and its argument caused the parsing to be incorrect.
Added argument recover to parseLatex(), to attempt to recover after a parsing error. This may help with diagnosing the error. The error will be wrapped in an ERROR tag which is displayed as >>>text causing error<<<.

parseLatex 0.2.1

Added find_sequence(), set_contents().
Add DEFINITION tag to allow \begin etc. to be temporarily ignored. This allows parseLatex to parse \newenvironment and related macros that create definitions.
parseLatex() now stops parsing after \end{document} just as LaTeX does. The get_leftovers() function can retrieve the unparsed text.
Added support for “magic comments”. See the vignette for details.
verb macros now allow embedded braces as long as they are balanced.