update to latest UDPspeeder library.
bug fix: https://github.com/wangyu-/UDPspeeder/issues/290

(note: while UDPspeeder is cross-platform, tinyfecvpn is linux only.)

updated to lastest UDPspeeder library

Added full ipv6 support (now ipv6 works both inside and outside vpn)

Added support for fine-grained fec parameter, for example -f 1:3,2:4,10:6,20:10, check UDPspeeder wiki for details.

Changed option --disable-mssfix to --mssfix <number>, --mssfix 0 is equal to the old --disable-mssfix

New option --persis-tun to create persistent tun devices without the help of additional programs.

New option --disable-checksum to save some performance, at the cost of not being able to detect some incorrect packets.

(other existing similiar options : --disable-obscure --disable-xor and even --disable-mssfix --disable-fec )

sync UDPspeeder updates.

How to choose a binary for your device

Do not drop packet after MTU exceeded in mode 1. Instead, just give a warning.

This behavior may be more friendly than the previous one.

Implemented build-in mssfix.

Changed default fec_mode and tun interface MTU.
Now, with the default setting, there shouldn‘t be any MTU related problem.

Implemented NAT pipe keepalive feature.

First release of tinyFecVPN.