Merge branch 'master' into light-poa

ethcore/src/engines/validator_set/simple_list.rs

@@ -16,7 +16,8 @@
 
 /// Preconfigured validator list.
 
-use util::{H256, Address, HeapSizeOf};
+use heapsize::HeapSizeOf;
+use util::{H256, Address};
 
 use engines::{Call, Engine};
 use header::{BlockNumber, Header};

ethcore/src/engines/validator_set/test.rs

@@ -19,7 +19,8 @@
 use std::str::FromStr;
 use std::sync::Arc;
 use std::sync::atomic::{AtomicUsize, Ordering as AtomicOrdering};
-use util::{Bytes, H256, Address, HeapSizeOf};
+use heapsize::HeapSizeOf;
+use util::{Bytes, H256, Address};
 
 use engines::{Call, Engine};
 use header::{Header, BlockNumber};