Log Message:
Update to 0.5:

2006-03-12 Mattias Holmlund

  Version 0.7

  Add NoUpdate option.
  Remove Verbose output for HEAD requests.

2005-05-30 Mattias Holmlund

  Version 0.6

  Handle invalid cache-directories.
  Create the cache directory if it doesn't exist.
  Store the headers Content-Type, Content-Length, Content-Encoding,
  Content-Range and Last-Modified in the cache and restore them
  when returning a cached response.
  Fix bug in ETag cache handling.