* Fix packages build
* Add support for boolean type in subgraph schema
* Add BigDecimal fromString and toString implementation
* Add implementation for subgraph Bytes type
* Implement enum type for subgraph schema
* Add implementation for subgraph schema BigDecimal type
* JSON stringify and parse entity data for auto-diff
* Invoke subgraph handler in watcher event processing
* Fix error when invoking subgraph handler
* Parse events using event signature specified in subgraph yaml
* Use contract abi to parse event params
* Invoke event handler based on event signature
* Fill event with block and transaction data
* Comment missing fields in block and transaction data