Since commit ed46f09c1ccd1351e003a200ba50e3e4778ac478 (Implement
tc[io]flush methods & deprecate broken purge_buffers methods.)
ftdi_usb_purge_buffers() routine is deprecated. Use HAVE_FTDI_TCIOFLUSH
macro to invoke the newly introduced ftdi_tcioflush() routine.
Integrate old INSTALL into README.md, both files had a lot
of (potential) overlap.
Add template for new entries in NEWS, targetting next release.
Bump version number to 6.99-20211218
Tentatively, with the Github migration and all ongoing code
restructuring, we aim for a version 7.0 release at some point
in the future.
Joerg Wunsch
Marius Greuel
Yegor Yefremov