Merge branch 'master' into keccak_fn

ethcore/src/blockchain/blockchain.rs

@@ -21,6 +21,7 @@ use std::sync::Arc;
 use std::mem;
 use itertools::Itertools;
 use bloomchain as bc;
+use heapsize::HeapSizeOf;
 use util::*;
 use rlp::*;
 use header::*;

ethcore/src/blockchain/extras.rs

@@ -25,7 +25,8 @@ use engines::epoch::{Transition as EpochTransition};
 use header::BlockNumber;
 use receipt::Receipt;
 
-use util::{HeapSizeOf, H256, H264, U256};
+use heapsize::HeapSizeOf;
+use util::{H256, H264, U256};
 use util::kvdb::PREFIX_LEN as DB_PREFIX_LEN;
 
 /// Represents index of extra data in database