- added a WinCacheClassLoader for WinCache
- added a DebugClassLoader able to wrap any autoloader providing a findFile method
- added a new ApcClassLoader and XcacheClassLoader using composition to wrap other loaders
- added a new ClassLoader which does not distinguish between namespaced and pear-like classes (as the PEAR convention is a subset of PSR-0) and supports using Composer's namespace maps
- added a class map generator
- added support for loading globally-installed PEAR packages