* parity-version: bump beta to 2.0.4
* [light/jsonrpc] Provide the actual account for `eth_coinbase` RPC and unify error handeling for light and full client (#9383)
* Provide the actual `account` for eth_coinbase
The previous implementation always provided the `zero address` on
`eth_coinbase` RPC. Now, instead the actual address is returned on
success or an error when no account(s) is found!
* full client `eth_coinbase` return err
In the full-client return an error when no account is found instead of
returning the `zero address`
* Remove needless blocks on single import
* Remove needless `static` lifetime on const
* Fix `rpc_eth_author` test
* parity: print correct keys path on startup (#9501)
* aura: don't report skipped primaries when empty steps are enabled (#9435)
* Only check warp syncing for eth_getWorks (#9484)
* Only check warp syncing for eth_getWorks
* Use SyncStatus::is_snapshot_syncing
* Fix Snapshot restoration failure on Windows (#9491)
* Close Blooms DB files before DB restoration
* PR Grumbles I
* PR Grumble
* Grumble
* new blooms database
* fixed conflict in Cargo.lock
* removed bloomchain
* cleanup in progress
* all tests passing in trace db with new blooms-db
* added trace_blooms to BlockChainDB interface, fixed db flushing
* BlockChainDB no longer exposes RwLock in the interface
* automatically flush blooms-db after every insert
* blooms-db uses io::BufReader to read files, wrap blooms-db into Mutex, cause fs::File is just a shared file handle
* fix json_tests
* blooms-db can filter multiple possibilities at the same time
* removed enum trace/db.rs CacheId
* lint fixes
* fixed tests
* kvdb-rocksdb uses fs-swap crate
* update Cargo.lock
* use fs::rename
* fixed failing test on linux
* fix tests
* use fs_swap
* fixed failing test on linux
* cleanup after swap
* fix tests
* fixed osx permissions
* simplify parity database opening functions
* added migration to blooms-db
* address @niklasad1 grumbles
* fix license and authors field of blooms-db Cargo.toml
* restore blooms-db after snapshot
