Merge branch 'master' of https://github.com/danielshaving/redis-cpp17

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Delete .suo

redisdb add transaction

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add redis set

add snapshot redis zset

hiredis socket close

add hash

add redis command setnx msetnx setvx del delvx setrange getrange

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redisdb

hiredis createsocket too many open files bug, add mulitthread cross platfrom redisdb kv store.

hiredis cluster nodes