* new Compressible rlp trait
* new Compressible rlp trait
* make compressed rlp iterable
* make compressed rlp iterable
* invalid rlp slice swapper
* switch compress to swapper, add reverse swapper test case
* add basic account compression test
* add new rlp trait
* new Compressible rlp trait
* make compressed rlp iterable
* invalid rlp slice swapper
* invalid rlp slice swapper
* switch compress to swapper, add reverse swapper test case
* switch compress to swapper, add reverse swapper test case
* add account compress/ decompress test
* make compressor cleaner, use hashmaps for swapper
* improve compression tests
* add a DecompressingDecoder, change Decoder to take refernce
* separate rlp compression related stuff
* new Compressible rlp trait
* new Compressible rlp trait
* new Compressible rlp trait
* make compressed rlp iterable
* make compressed rlp iterable
* make compressed rlp iterable
* invalid rlp slice swapper
* invalid rlp slice swapper
* invalid rlp slice swapper
* switch compress to swapper, add reverse swapper test case
* switch compress to swapper, add reverse swapper test case
* switch compress to swapper, add reverse swapper test case
* add basic account compression test
* add new rlp trait
* add account compress/ decompress test
* make compressor cleaner, use hashmaps for swapper
* improve compression tests
* add a DecompressingDecoder, change Decoder to take refernce
* separate rlp compression related stuff
* DecompressingDecoder test
* initial compressing HashDB wrapper
* remove unused test
* change CompressedDB to struct wrapper with overlay
* simplify compressor
* failed RefCell attempt
* use denote to return reference
* compiled compresseddb
* compressdb test, add overlay emplace
* fix overlay reference count handling
* add immutable compresseddb, make account use hashdb
* simplify using trait objects
* enable hashdb for account
* initial state compression attempt
* wrap state db
* add tests for analyzing db
* add account predicate
* try to compress data fields as rlp too
* remove compression for storage trie
* add a compressing migration
* more compression stats tests
* fix migration import
* nested encoding compression test
* fix decompression, move db stats tests to rlpcompression
* added malformed rlp tests, cover a few edge cases
* new CompressingEncoder struct
* extend migrations to state
* first version working on the whole db
* clean up Compressible impl
* tests cleanup
* add a testing migration
* refactor deep compression using option, add simple compression
* put tests in a module
* fix compressed overlay loading
* simple compression for snapshots
* remove unused DecompressingDecoder
* add a general compressing migration
* add more common rlps to compress
* use static slices for swapper
* add precomputed hashes and invalid rlps
* make decoder private again
* cover more cases with tests
* style
* fix weird indentation
* remove possible panic in payload_info
* make prefix checking safe
* fix db existence check
* remove db dir from test
* pass usize by value [ci skip]
* Improve comment on panic removal.
* add common blocks db rlps
* add compression to blockchain db
* add blocks db migration
* fix the migrations
* remove state compression
* add a separate snapshot swapper
* ability to use different swappers and traversal
* update tests to new interface
* clean up code ordering
* update usage
* fix compilation
* remove unnecessary changes
* move methods to functions to reduce interface
* move test to module
* update common rlps to blocks db
* move tests to tests modules
* remove redundant &
