Now logs length of telegram received via SMTP SOML command.

struct before calling bind() which caused intermittent failures on FreeBSD.

Drop-filenames can be optionally created in lowercase.

Repeating ASCII header fields (e.g. RFC822HEADER) are accessed with the
hdr.field_list array.

Socket class is now documented separately from client object.
Class and Array objects are documented as "class" or "array", not "object".

Changed the property and method header styles.
Changed the bulleted listed to show the hierarchy (would prefer collapsable).