Changes from 0.12 to 0.13:
---------------------------
MAILDIR
 1.  Fixed a bug where the message list would be empty if we encountered
     a message file with a size of 0. We skip the file now.
 2.  Introduced functions maildir_get_flags(), maildir_put_flags(),
     and maildir_has_flags() to read, set, and check for maildir
     status flags in message filenames. This lets the LAST command
     work with a Maildir drop, for clients that won't get message
     status from UIDLs.
     We currently only use and set the 'S' flag, but will keep other 
     retrieved flags intact. --disable-status will be honored to not 
     set the 'S' flag.
 3.  If we encounter a Maildir/ message with no body, we make sure to reset the 
     inheader flag, so the next message doesn't show as corrupted. Some MTAs
     do not add a blank line (\n) onto their Maildir/ format messages, which
     triggers this.
MYSQL
 1.  Increased the size of the password field in the example mysql table
     structure from 32 to 64.
 2.  Added a note to the README.MYSQL file, that states the mysql-popper.conf
     file should NOT be specified on the command line with -f.