aria2 1.16.4 released

aria2 is a lightweight multi-protocol & multi-source, cross
platform download utility operated in command-line. It supports
HTTP/HTTPS, FTP, BitTorrent and Metalink.

This release fixes the bug that active downloads are not saved with
--save-session-interval and the bug that aria2 hangs when size of
download result exceeds its maximum. BitTorrent UDP tracker support
was added. If the filename specified using --save-session ends with
".gz", aria2 stores the session file in gzipped form. The -i option
can handle this gzipped file as well as plain text file. 1.15.2 based
Portuguese translated manual was added.