* Handle conflicts (#244)
* Handle conflicts
* Update go mod file versions
* Make lint changes
* Disassociate block number from the indexer object
* Update ipld-eth-db ref
* Refactor builder code to make it reusable
* Use prefix comparison for account selective statediffing
* Update builder unit tests
* Add mode to write to CSV files in statediff file writer (#249)
* Change file writing mode to csv files
* Implement writer interface for file indexer
* Implement option for csv or sql in file mode
* Close files in CSV writer
* Add tests for CSV file mode
* Implement CSV file for watched addresses
* Separate test configs for CSV and SQL
* Refactor common code for file indexer tests
* Update indexer to include block hash in receipts and logs (#256)
* Update indexer to include block hash in receipts and logs
* Upgrade ipld-eth-db image in docker-compose to run tests
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