Release v2.5.12

• Support custom hash_key and shard_key template referring to Hash and Shard Key
  • They together control which influxdb instance the data should be written to
  • The command influx-tool hashdist can help simulate and test the hash distribution
• All transfer api support the since parameter, which has the same effect as the tick parameter (tick is still valid) and has clearer semantics
• The /replica api supports the mm parameter, which has the same effect as the meas parameter (meas is still valid), but is more concise