* Handle BigNumber event params in watchers
* Customize decimal according to limits of IEEE-754 decimal128
* Add definition for custom scalar BigDecimal
* Handle subgraph schema field with derivedFrom directive
* Handle derivedFrom directive in eden-watcher
* Fix 1 to N relation error by removing limit from query
* Order by id for derivedFrom relations to match graph-node
* Refactor example subgraph schema entities
* Fix watcher queries to return correct relation field values
* Fix hierarchical query for getting two entities at same block
* Add implementation for one to one relation
* Implement one to many relation in gql queries
* Make changes for gql relation queries in eden-watcher
* Implement subgraph gql relation queries with joins
* Handle relation entities in subgraph
* Modify eden-watcher entities to handle subgraph schema data types
* Modify schema gql to match eden subgraph gql shape
* Handle array type fields in subgraph schema
* Fix store get api for array type fields in subgraph entities
* Handle array type in eden-watcher and format await used in params
* 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