Updated dependency versions for netty 4.0, slf4j, and netty 4.1
Updated dependency versions for netty 4.0, slf4j, and netty 4.1

adamfisk/LittleProxy,ganskef/LittleProxy,adamfisk/LittleProxy,verygoodsecurity/LittleProxy,adamfisk/LittleProxy,adamfisk/LittleProxy,jekh/LittleProxy,jekh/LittleProxy,ganskef/LittleProxy,ganskef/LittleProxy,jekh/LittleProxy,ganskef/LittleProxy,jekh/LittleProxy,rwtemple/LittleProxy,rwtemple/LittleProxy,verygoodsecurity/LittleProxy,adamfisk/LittleProxy,verygoodsecurity/LittleProxy,verygoodsecurity/LittleProxy,rwtemple/LittleProxy,rwtemple/LittleProxy,jekh/LittleProxy,verygoodsecurity/LittleProxy,ganskef/LittleProxy,rwtemple/LittleProxy