* introduce code node
* replace codeMap with code touches
* fix a comment
* fixups to tests
* fix compile error
* fix getnodedata tests
* add tests and test stubs
* add more test stubs
* add test method bodies
* add and fix more tests on trie for new codenode
* add test change code between blocks
* fix crash in stateless
* remove unneded files
* remove comment
* fix deleted account code
* fix resolve set builder for code nodes
* save state
* remove repair
* save state
* remove emptydb check
* save state
* add walkAsOf test
* add WalkAsOf and MultiWalkAsOf tests
* deployed contracts counter
* reference counter for contract code
* drop storage root&contract hash for changesets
* start incarnation is 1(save state)
* fix ReorgOverSelfDestruct test
* hack fix TestReorgOverSelfDestruct
* test benchmark
* cleanup
* remove useless debug
* remove print trie
* return remove subtrie call to updateTrieRoot
* save state
* add mutation test
* remove useless test
* fix
* added mutation commit test
* rename experiment to thin history
* thin history mutation commit test
* fix ethdb tests
* getAsOf test
* add test&fix history index
* fix test
* make test for index search
* compute trie root incarnation fix
* tests fixes
* done job in case of panic
* fix lint
* fix&test for bad incarnation
* fix initial incarnation for genesis
* fix lint
* fix changeset test
* fix storage ranges test
* fix lint
* move set incarnation to create contract
* add comment
Co-authored-by: ledgerwatch <akhounov@gmail.com>
Co-authored-by: Evgeny Danilenko <6655321@bk.ru>
