• auto-detect public vs private keys
• add file_exists, is_dir, is_file, readlink and symlink to Net_SFTP
• add support for recursive nlist and rawlist
• make it so nlist and rawlist can return pre-sorted output
• make it so callback functions can make exec() return early
• add signSPKAC and saveSPKAC methods to File_X509
• add support for PKCS8 keys in Crypt_RSA
• add pbkdf1 support to setPassword() in Crypt_Base
• add getWindowColumns, getWindowRows, setWindowColumns, setWindowRows to Net_SSH2
• add support for filenames with spaces in them to Net_SCP