changelog

Signed-off-by: tech0priyanshu <priyanshuyadv101106@gmail.com>

Author: tech0priyanshu

CHANGELOG.md

@@ -7,6 +7,7 @@ This changelog is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.
 ## [Unreleased]
 
 ### Added
+- Refactored token classes to use dataclass-driven `__str__ `and `__repr__` generation. [#999](https://github.com/hiero-ledger/hiero-sdk-python/issues/999)
 - Automated assignment guard for `advanced` issues; requires completion of at least one `good first issue` and one `intermediate` issue before assignment (exempts maintainers, committers, and triage members). (#1142)
 - Added Hbar object support for TransferTransaction HBAR transfers:
   - Methods now accept `Union[int, Hbar]` for amount parameters with immediate normalization to tinybars