Version 2.7.0.0
* Obsoleting the Network module.
* Obsoleting the Network.BSD module.
* Obsoleting APIs: MkSocket, htonl, ntohl,
getPeerCred, getPeerEid,
send, sendTo, recv, recvFrom, recvLen,
inet_addr, inet_ntoa,
isConnected, isBound, isListening, isReadable, isWritable,
aNY_PORT, iNADDR_ANY, iN6ADDR_ANY, sOMAXCONN,
sOL_SOCKET, sCM_RIGHTS,
packFamily, unpackFamily, packSocketType
* Do not closeFd within sendFd.
[#271](https://github.com/haskell/network/pull/271)
* Exporting ifNameToIndex and ifIndexToName from Network.Socket.
* New APIs: setCloseOnExecIfNeeded, getCloseOnExec and getNonBlock
* New APIs: isUnixDomainSocketAvailable and getPeerCredential
* socketPair, sendFd and recvFd are exported even on Windows.<Paste>