Add RFC6598 reserved prefix (Jigsaw-Code#103)

Merge pull request Jigsaw-Code#101 from Jigsaw-Code/bemasc-happy-eyeb…

…alls

Use implicit name resolution for TCP destinations

Merge pull request Jigsaw-Code#97 from Jigsaw-Code/bemasc-keyid

Bugfix: track the keyID for UDP connections

Merge pull request Jigsaw-Code#96 from Jigsaw-Code/fortuna-deps

Stop depending on broken go-shadowsocks2

Merge pull request Jigsaw-Code#92 from Jigsaw-Code/fortuna-key

Fix key derivation

Merge pull request Jigsaw-Code#87 from Jigsaw-Code/bemasc-unpack

Use our own implementation of Pack for UDP

Merge pull request Jigsaw-Code#80 from Jigsaw-Code/bemasc-blocksalt

Correct pointer type in cipher list

Merge pull request Jigsaw-Code#78 from Jigsaw-Code/bemasc-blocksalt

Prevent replays of server data

Merge pull request Jigsaw-Code#73 from Jigsaw-Code/bemasc-lazy2

Concatenate header and first upstream payload

Merge pull request Jigsaw-Code#69 from Jigsaw-Code/bemasc-salt

Coalesce the salt and the first message