• add support for resuming to Net_SFTP::put()
• add support for recursive deletes and recursive chmods to Net_SFTP
• add setTimeout() to Net_SSH2
• add support for PBKDF2 to the various Crypt_* classes via setPassword()
• add File_X509 and File_ASN1
• add the ability to decode various formats in Crypt_RSA
• make Net_SSH2::getServerPublicHostKey() return a printer-friendly version of the public key