* kvdb-rocksdb: update to RocksDB 5.8.8
* kvdb-rocksdb: tune RocksDB options
* Switch to level-style compaction
* Increase default block size (16K), and use bigger blocks for HDDs (64K)
* Increase default file size base (64MB SSDs, 256MB HDDs)
* Create a single block cache shared across all column families
* Tune compaction settings using RocksDB helper functions, taking into account
memory budget spread across all columns
* Configure backgrounds jobs based on the number of CPUs
* Set some default recommended settings
* ethcore: remove unused config blockchain.db_cache_size
* parity: increase default value for db_cache_size
* kvdb-rocksdb: enable compression on all levels
* kvdb-rocksdb: set global db_write_bufer_size
* kvdb-rocksdb: reduce db_write_bufer_size to force earlier flushing
* kvdb-rocksdb: use master branch for rust-rocksdb dependency
* cli commands
* cleanup parity/signer
* cleanup parity/signer
* remove redundant import of signer crate from main.rs
* cli cleanup in progress
* cli cleanup in progress
* moved few commonly used functions to separate methods with tests
* cleaning up blockchain import in progress
* cleaning up blockchain import in progress2
* cleaning up blockchain import in progress3
* tests for database compaction profile parsing
* cleaning up blockchain import in progress4
* cleaning up blockchain import in progress5
* blockchain import
* export blockchain in progress
* cleanup execute_export
* Configuration::to_duration cleaned up
* removed unused code, tests for to_duration
* cleanup Configuration::mode function
* parsing some of the cli params in params.rs
* rpc and signer are no longer optional
* move importing extern crates to main.rs file
* swipe dies from rpc module
* swipe dies from dapps
* finding deprecated
* several tests and fixes for parity
* parity cleanup in progress
* cleanup price parsing
* parity cleanup in progress
* swiped all dies
* parity cleanup in progress
* replace usages of from_str with parse() in parity/params.rs
* removed few more from_str
* split parity/params.rs into params and helpers
* removed wildcard import from configuration.rs
* cleanup directories/path creation
* cleaning up run cmd
* moved LoggerConfig
* defaults for cli params
* fixed indention in raise_fd_limit
* tests for rpc_apis
* tests for default ipc and rpc settings
* ipc socket
* cleanup in progress
* account service
* cleanup miner config
* BlockChain commands use Directiores structure now
* client_config
* network settings and dapps configuration
* removing warnings
* default logger config
* fixed client_path
* overhaul
* fixing export && import
* default export DataFormat
* import and export also upgrade db
* fixed export && import
* polishing pr
* polishing pr
* fixed custom bootnodes
* fixed daemonize on windows
* fixed setting up enable network
* finished pr
* fixed compiling on windows
* Fixed warning; windows build
* Better cache management
* Fixed tests on windows
* Fixed test
* Restored pruning method names
* --cache alias
* Fixed more tests
* Ensure default options actually listed as valid
[ci:skip]