least remove huge lines

  '' write in the case of backslash-ended
  lines.  [ticket:155]

  are considered "undefined", meaning they
  are pulled from the context, has been
  trimmed back to not include variables
  declared inside of expressions (i.e. from
  list comprehensions), as well as
  in the argument list of lambdas.  This
  to better support the strict_undefined
  feature.

  strict_undefined=True, will cause
  variables not found in the context to
  raise a NameError immediately, instead of
  defaulting to the UNDEFINED value.

doesn't occur on Python 2.7

  such as <%foo:bar x="${...}">, now
  allow multiline Python expressions.

  for the `file` argument, i.e. with ${}.
  The `context` variable, if needed,
  must be referenced explicitly.
  [ticket:141]

- Fixed previously non-covered regular
  expression, such that using a ${} expression
  inside of a tag element that doesn't allow
  them raises a CompileException instead of
  silently failing.

  i.e. in place of cgi.escape().  Faster
  C-based implementation and also escapes
  single quotes for additional security.
  Supports the __html__ attribute for
  the given expression as well.

  When using "disable_unicode" mode,
  a pure Python HTML escaper function
  is used which also quotes single quotes.

  Note that Pylons by default doesn't
  use Mako's filter - check your
  environment.py file.

  exceptions.text_error_template which
  is not Py3k compatible.  [ticket:137]

  such that if no traceback is passed
  and sys.exc_info() has been reset,
  the formatter just returns blank
  for the "traceback" portion.
  [ticket:135]
- some long line cleanup

  line contains no line number, as in when
  inside an eval/exec-generated function.
  [ticket:132]

  template.get_def(...).render() now checks the
  argument signature the same way as it did in
  0.2.5, so that TypeError is not raised.
  reopen of [ticket:116]

  a given path that is a directory, not a filename,
  instead of passing through to the template to
  generate IOError.  [ticket:73]

  is passed only an absolute filename (i.e. with c:
  drive etc.)  and no URI - the URI is converted
  to a forward-slash path and module_directory
  is treated as a windows path.  [ticket:128]

  uncommon feature, have been improved.  The defs
  no longer get doubly-rendered in the body() scope,
  and now allow local variable assignment without
  breakage.  [ticket:109]

  inheriting template - the full set of render()
  arguments are passed down through the inherits
  chain.  Undeclared arguments go into **pageargs
  as usual.  [ticket:116]

  % if: %endif, etc. [ticket:94]
- finished cleanup for codegen.py, [ticket:98]

  non-whitespace character on a line by escaping
  it as in "%%". [ticket:112]

  text_error_template().render() now accept "error"
  and "traceback" as optional arguments, and
  these are now actually used.  [ticket:122]

- Python 3 support is added ! See README.py3k
  for installation and testing notes.
  [ticket:119]

- Source code escaping has been simplified.
  In particular, module source files are now
  generated with the Python "magic encoding
  comment", and source code is passed through
  mostly unescaped, except for that code which
  is regenerated from parsed Python source.
  This fixes usage of unicode in
  <%namespace:defname> tags.  [ticket:99]

HTML file writing, consistently cleanup the modules/cache directories, use
nose skiptests for unsupported features.

html_error_template. fixes #88

cases

fixes #118

  was causing tags to compile with
  case-insensitive names, thus messing up
  custom <%call> names. [ticket:108]

  AttributeError on attribute not found
  instead of RuntimeError.  [ticket:104]

  allows custom decoration functions to wrap
  rendering callables.  Mainly intended for
  custom caching algorithms, not sure what
  other uses there may be (but there may be).
  Examples are in the "filtering" docs.

  around '=' sign in defs. [ticket:102]

  <%page> args named the same as a __builtin__ would not
  honor the default value specified in <%page> [ticket:93]

better support grouping