Log Message:
Changes 2.4.2:
* Fix issue where subclasses of Template failed to pick up attributes in the
  searchlist
* Remove old/outdated bundled memcached python client
* Allow for #encoding directives to exist after a comment (i.e. not the first
  line in a module)
* Remove support for WebWare servlets (which caused significant performance
  slowdowns on Mac OS X)
* Old/stale code pruned in preparation for Python 3 support

Changes 2.4.1:
* --quiet flag added to `cheetah` to silence printing to stdout
* Refactoring to minimize the amount of forked code for Python3
* Template.compile() will no longer create class names with numerous leading
  underscores
* DirectiveAnalyzer (cheetah-analyze script) added to report directive usage in
  templates
* Older LaTeX docs converted to rst for Sphinx
* Prevent #raw blocks from evaluating $-placeholders and escaped strings
* New tests added to verify PSP behavior and other untested internals

Changes 2.4.0:
* Fix a major performance regression in Template.__init__()
* More graceful handling of unicode when calling .respond() to render a template
* Minor code updates
* Update the default filter