New features and changes in tin-1.7

Changes
-------
. interactive mailer can now be fed with headers. The old use_mailreader_i
  config variable is obsolete and superseded by the new interactive_mailer
  variable that can have three values:
  0  no interactive mailreader (old use_mailreader_i=OFF)
  1  interactive mailreader with headers
  2  interactive mailreader without headers (old use_mailreader_i=ON)

New features
------------
. You can now specify a mailbox folder to save your sent mails (fcc=) so
  you possibly don't need auto_cc or auto_bcc anymore. See tin(5).

. x_headers can take a command which generates the header(s). See tin(5).

. mime_forward (message/rfc822) attributes option

. single line scrolling in all levels

. minimalistic BiDi support (render_bidi)

. minimalistic IDNA decoding support

. display non-printable characters as octals in raw-mode

. user defined date_format

Retired Features
----------------
. AmigaOS support
