Parity 1.3.4

Parity 1.3.4 release contains more optimizations to internal caching as well as stability improvements.
It also introduces an ability for miners to choose a transaction ordering strategy:

--tx-queue-strategy S    Prioritization strategy used to order transactions
                         in the queue. S may be:
                         gas - Prioritize txs with low gas limit;
                         gas_price - Prioritize txs with high gas price;
                         gas_factor - Prioritize txs using gas price
                         and gas limit ratio [default: gas_factor].

Full changelog is available here.