add comments about the padding nonce prefix of EtheteumStratum/1.0.0

ETH: Fix inaccurate default difficulty

Disconnect the miner immediately when the connection to the mining po…

…ol is not ready

This helps to solve the problem that the miner still thinks the connection is active when the BTCAgent's connection to the mining pool fails.

add a new option "use_proxy" as a proxy switch

update ConfigFileDetails-zhCN.md

add `Config file Details` links for README-Windows.md

add a new option "ip_worker_name_format" (default format will like "1…

…92x168x1x23")

ignore empty lines if "decode line fail, not a json string"

send client.reconnect if version rolling disabled mid-way. (a temp wa…

…y to avoid hashrate lose of Antminer S9i).

fix crash after authorize failed.