0.1.3 (1 December 2005)
-----------------------
Fixed a few bugs:
* Null vectors are now unparsed properly by the dot unparser
* RETURN and RETURN_OP in the lexer were broken (i.e, --dump-tokens wasn't
  working) - they were referring to source column numbers that we no longer keep
  track off.
* We now deal with Windows-style linebreaks.

0.1.2 (17 November 2005)
------------------------
Added functionality to the TreeTransform API to enable the programmer to change
the order in which the children of a node are visited, avoid visiting some
children, or execute a piece of code in between visiting two children.

0.1.1 (2 November 2005)
-----------------------
Fixed a bug in the lexer (PHP in-string syntax).
