v1.5.6

What's Changed

• refactor(indexer): move off pending block & exclusively use events by @Larkooo in #89
• feat(grpc): subscription workers entities by @Larkooo in #90
• release(prepare): v1.5.6-preview.0 by @glihm in #91
• refactor(sqlite): sqlite & executor thiserror by @Larkooo in #92
• refactor(indexer): engine use custom error by @Larkooo in #93
• refactor: processors & executor error contexts by @Larkooo in #94
• opt(indexer): engine cache fetched data on processing failture & fetch events pending fix by @Larkooo in #95
• feat(indexer): move to event based cursor for engine by @Larkooo in #97
• refactor(sqlite): pending tx event id column and cursor by @Larkooo in #98
• opt(erc): use dashmap for token registries by @Larkooo in #99
• feat(grpc): use dashmap across all subscriptions by @Larkooo in #102
• feat(grpc): grpcconfig & configurable sub buffer size by @Larkooo in #103
• release(prepare): v1.5.6 by @glihm in #104

Full Changelog: v1.5.5...v1.5.6