qcdll

in addition to objgraph, tracking size of objects: ``` slave.add_block_futures shard.state.new_block_pool shard.add_block_futures shard.state.db.m_header_pool shard.state.db.m_meta_pool shard.state.db.x_shard_set shard.state.db.r_header_pool shard.state.db.r_minor_header_pool shard.state.db.height_to_minor_block_hashes ```

looks `shard.state.db.height_to_minor_block_hashes` has steady increase over time but the count is not out of ordinary, will revisit with new testnet 23

ahh, right, now I remember missing this part... looks to me CrossShardTransactionDeposit shall encode a map of tokens. But this map mostly would contain just one entry (from x-shard transactions)...