* Update `add_license` script
* run script
* add `remove duplicate lines script` and run it
* Revert changes `English spaces`
* strip whitespaces
* Revert `GPL` in files with `apache/mit license`
* don't append `gpl license` in files with other lic
* Don't append `gpl header` in files with other lic.
* re-ran script
* include c and cpp files too
* remove duplicate header
* rebase nit
* separate migration from util and make its dependencies into libs:
* snappy
* kvdb
* error
* common
* renamed common -> macros
* util error does not depend on snappy module
* ethsync does not depend on util nor ethcore_error
* nibbleslice and nibblevec merged with patricia_trie crate
* removed unused dependencies from util
* util journaldb traits does not need to be public
* util_error
* fixed ethcore compile error
* ignore .swo files
* Update chain.rs
* user defaults
* finished user defaults
* user defaults are network-dependent
* added tests for newly added functions, logger is initialized first
* dir cleanup in progress
* user_file is placed next to snapshots
* Consolidation migration
* Started db amalgamation
* Using client constants for columns
* Adding with_columns constructor
* Migrating to single db
* Fixing tests.
* test.sh without verbose
* Fixing warnings
* add migration tests that catch the bug
* make multiple migrations more robust
* add moved v9
* Merge branch 'noop-migrations' into single-db
* spurious line
* clean up migrations ordering
* update comment [ci skip]
* Bumping default number of max_open_files & re-ordering columns.
* fix merge
* fix ignored analysis tests
* Caching best block content
* Faster best_block_header
* Adding progress to v8 migration
* clean up warnings
* Separate hashes and bodies in the DB
* Separate hashes and bodies in the DB
* Fixed tests
* executive tracer builds flat traces without intermediate struct
* temporarilt commented out tests for traces
* fixed new way of building trace address
* fixed new way of building trace address
* updating state tests with flat tracing in progress
* fixed flat tracing tests
* fixed compiling ethcore-rpc with new flat traces
* removed warnings from ethcore module
* remove unused data structures
* Groundwork for basic VM tracing.
* RPC endpoint for VM tracing and ser/de types ready.
* Create VMTracer trait.
* Rearchitected VM tracing to reflect existing tracing.
Should more or less work now.
* Integrated VM tracing into JSONRPC.
* Fix ethcore module tests.
* Add tests for VM tracing.
* Fix consensus test code.
* Fix mock tests.
* Added VM trace information for post-execution stuff.
* Fix max-value calls and add "creates" field to getTransaction.
* Tests for VM tracing.
* Don't implement the trait with unimplemented.
* Remove invlaid comment.
* Fix tests.
