Release 1.2.0

New stuff:

• Add -L to control lingering
• Add option -r, reflect UDP back to sender
• Add TCP reflection when using libuv
• Add TLS support -T
• Add reflection TLS
• Add "close after first reflect" -C
• Add option -D <percent>: Randomly disconnect on receive based on a percentage

Bugfixes and tweaks:

• Use shutdown() and add callback in EV code
• Fix TCP stats when reflecting
• Fix memory leak in UV TCP receive handler

3b0c91c random disconnect
8fd0525 TCP stats
b1bef63 work
a10a963 Reflect TCP
8a3d99c reflect UDP
24b6208 Socket lingering and proper shutdown