Fix two un-related typos.
Some last copyright year updates and change to open bug list

This updates one rather important mention of the copyright year
(the encoding/decoding progress display) and a few in the
documentation. Furthermore, it updates the open bug list

Signed-off-by: Erik de Castro Lopo <erikd@mega-nerd.com>
Normalize some copyright dates strings.

This will make it easier to simply search and replace.
changelog.html : Minor corrections in decoding speed entry.