RPC Pending Transactions Filter

Conflicts:
	miner/src/miner.rs
	parity/main.rs

Conflicts:
	ethcore/src/client/client.rs
	parity/main.rs
	sync/src/chain.rs
	sync/src/lib.rs

Rearrange journaldb infrastructure to make more extensible

JournalDB -> Box<JournalDB>, and it's a trait.

fix warning for transaction_queue.add usage

Conflicts:
	util/bigint/src/uint.rs

Adding std::mem back (only for asm)

update readme to exclude beta step (stable is ok)

Conflicts:
	rpc/src/v1/impls/eth.rs

fixed U256 and transaction request deserialization

Conflicts:
	parity/main.rs

Conflicts:
	Cargo.lock
	Cargo.toml
	ethcore/src/client/client.rs
	hook.sh
	parity/main.rs
	rpc/Cargo.toml
	rpc/src/v1/impls/eth.rs
	sync/Cargo.toml
	sync/src/tests/helpers.rs

More geth compatibility.

Removing running clippy by default on nightly.

rpc net submodule tests