* Logs subscription. * Add test. * lock -> write
* Use randomized subscription ids for PubSub * Use H64 instead of H128. * iflet instead of match. * Adding 0x.
* Signer subscription. * Fixing RPC tests. * Block Headers eth-pubsub. * PubSub for light client. * Fixing tests. * Updating to proper jsonrpc version. * Update to correct tests. * Fixing tests.