Added missing methods for INCRBY (long) and INCRBYFLOAT for both standard keys as well as hashes
Fixed command for HIncrbyFloat (was using HINCRBY instead of HINCRBYFLOAT)
Fixed command for IncrByFloat
Merge branch 'v3-fixes' into v3
Merge pull request #193 from jpasichnyk/v3

INCRBY, HINCRBY, and HINCRBYFLOAT changes
socket is not set to null during transaction, after redis server stops, then starts.

after redis server stops, the sockets which are used by RedisClient in
the transaction are not set to null. when the redis server is back on,
socket exceptions will be thrown. move the try /catch logic into
FlushSendBuffer instead.
Merge pull request #195 from icyice80/v3

socket is not set to null during transaction, after redis server stops, ...