Stanimir Stoyanov

feat: HIP-904 Introduce `unlimitedAutoAssociations` feature flag

9

**Description**: **Related issue(s)**: Fixes #12981 **Notes for reviewer**: **Checklist** - [ ] Documented (Code comments, README, etc.) - [ ] Tested (unit, integration, etc.)

test: Add test validating that BLOCKHASH returns the latest 256 blocks

9

**Description**: **Related issue(s)**: Fixes #3336 **Notes for reviewer**: **Checklist** - [ ] Documented (Code comments, README, etc.) - [ ] Tested (unit, integration, etc.)

refactor: Provide `isSelector` method for matching system contracts' function selectors

8

**Description**: Provided `isSelector` method in `AbstractCallAttempt` class that takes the `headlong.abi.Function` and matches is against the current call attempt. Refactored all uses of arrays matching for selector in the system...

Add the solidity references mentioned in [HIP-1010 design doc](https://github.com/hashgraph/hedera-services/pull/14205/commits) and include end-user tests also covered in the design document.

Implement the Token Airdrop System Contract flows described in https://github.com/hashgraph/hedera-services/pull/15435 ```[tasklist] ### Tasks - [ ] https://github.com/hashgraph/hedera-services/issues/15588 - [ ] https://github.com/hashgraph/hedera-services/issues/15589 - [ ] https://github.com/hashgraph/hedera-services/issues/15590 - [ ] https://github.com/hashgraph/hedera-services/issues/15591 -...

fix: Default KYC Status hardcoded on create

2

**Description**: This PR aims to fix the hardcoded `false` value for `defaultKycStatus` for a Token. Now setting value based on kycKey present. Adjusted existing tests and added a new one....

Implement the SetUnlimitedAutoAssociations System Contract described in https://github.com/hashgraph/hedera-services/pull/15435 - [ ] HSCS System Contract Classes - [ ] Feature flag - [ ] E2E tests