fixed a bug of unit test debug dump.
protocol decoder. base64 utility functions should be used across over classes.
authentication. username check API.
protocol decoder. decoder replace hook mechanism is added at user authentication IMAP command.
protocol decoder. initial decoder and authenticated decoder.
protocol decoder. initial decoder and authenticated decoder. ad-hoc implementation.
protocol decoder. initial decoder and authenticated decoder. utility methods should be defined at base decoder class.
protocol decoder. initial decoder state is fixed at "not authenticated state".
protocol decoder. initial decoder and authenticated decoder. stateless IMAP commands should be defined at base decoder class.
protocol decoder. class hierarchy for replaceable authenticated decoder.
protocol decoder. defined skeleton of mail delivery decoder.
protocol decoder. defined mail delivery user.
protocol decoder. user mail-store access utility is defined at base protocol class.
mail delivery decoder. RIMS capability extension for mail delivery user.
mail delivery decoder. commands are implemented those are not allowed on mail delivery user.
mail delivery decoder. defined utility function for encoded user mailbox at RIMS extension of mail delivery user.
mail delivery decoder. implemented mail delivery append command.
mail delivery decoder. command loop test.
add mail delivery user entry to server configuration.
Merge branch 'readme' into mail_delivery