anchor.diff:  
   The +:content-types+ key maps file extensions to MIME types.
   
  ++:content-transformers:+ maps content types to a transformation function; The CoffeeScript, Jade, and Less compilers operate by adding entries to +:content-types+ and :content-transformers+.
  +
   The +:compressable+ key identifies which content types are compressable; note the use of the +/*+ suffix to indicate
   that all text content types are compressable.
   
   File system caching is normally only enabled in development mode.
   
  -Twixt always caches the content of files in memory, after any transforming operations (such as compiling CoffeeScript to
  -JavaScript). 
  +Twixt always caches the content of files in memory, after any transforming operations. 
   In development mode, checks are enabled to refresh the cache when underlying files are modified; 
   in production, no such checks occur as it is assumed that all such assets are stable
   (until the entire application is re-deployed).
  
positive.code: and does some transformations along the way.
  
  Currently, the mapping is very straightforward: the path +/assets/123abc/css/style.less+ is mapped to resource
  +META-INF/assets/css/style.less+ and transformed from Less to CSS along the way.
  Embedded in the middle is the content checksum for the file (+123abc+).
  
  In your application, assets will change during development, or between production deployments. The URIs provided to
  the client agent (the web browser) is a _resource_; resources are immutable.
  
negative.code: The checksum has a optional "z" prefix; this indicates a GZip compressed resource.
  Twixt detects if the client agent supports GZip compression (via the +Accept-Encodings+ header).
  In addition, compression is only applied to specific content types, such as "text/html" and "application/edn".
  Most binary formats, including fonts and images, are already compressed.
  
  Because of this, when referencing assets inside your templates, you must pass paths (relative to +META-INF/assets+)
  through Twixt to get URIs that will work in the browser:
  