Anton Kaliaev e42f833fd4
Merge master back to develop (#3412)
* libs/db: close batch (#3397)

ClevelDB requires closing when WriteBatch is no longer needed, https://godoc.org/github.com/jmhodges/levigo#WriteBatch.Close

Fixes the memory leak in https://github.com/cosmos/cosmos-sdk/issues/3842

* update changelog and bump version to 0.30.2
2019-03-12 16:20:59 +04:00
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