0.7.4 : point reordering and various improvements and tools

data server

• support more from/to specifications, honor timezone controls #682
• expr panic fix #676
• allow target[]=foo specification #688
• measure duration of plan.Run() #689
• queries should fail when shards are missing. fixes #670. new config option for min-available-shard
• fix clustered consolidateBy() requests #707
• support from/to patterns for find query #708

cassandra

• update TWCS settings #690
• fix clustered scenario schema in cassandra doc (#679)
• set gc_grace_seconds to the compaction_window_size #700
• also track writeQueue len on puts. fix #701

index

• Avoid unnecessary string allocations during memory-idx.Add #687 , #692

reorder buffer (new!)

• reorder buffer to allow for some data to arrive out of order. #675

misc

• remove usage reporting from MT #666
• this might fix an OOM problem in cache.searchForward #696

clustering

• Adds an endpoint to post cluster peers to #680

tools

• new mt-replicator tool. consumes from local kafka cluster and publishes data to a remote tsdb-gw server. #645, #691
• Improvements on whisper importer #704