Python SDK version 0.1.9 released

[nadineloepfe]

This release adds several new features including BatchTransaction support, token metadata capabilities, and improved transaction APIs. It also includes numerous documentation improvements and new examples.

New Features

• BatchTransaction class - New class for batching multiple transactions together (feat: Added BatchTransaction class #811)
• Token metadata support - Added set_metadata setter to TokenCreateTransaction for token metadata (max 100 bytes) (feat: add token metadata support to TokenCreateTransaction #866)
• Hbar floating-point support - Improved Hbar class with HbarUnit to handle floating-point values (feat: Improve Hbar class to support floating-point values #737)
• TokenAssociateTransaction enhancements - Added set_token_ids, _from_proto, _validate_checksum methods (feat: expand functionality token associate #846)
• TokenDissociateTransaction refactor - Now uses set_token_ids method with updated transaction fees (feat: Refactor TokenDissociateTransaction to use set_token_ids method #830)
• AccountCreateTransaction fields - Added alias, staked_account_id, staked_node_id, decline_staking_reward, and EvmAddress class (feat: Added missing fields for AccountCreateTransaction #779)
• PublicKey support for keys - Allow PublicKey (not just PrivateKey) for TokenCreateTransaction and TopicCreateTransaction keys (feat: Allow PublicKey for TokenCreateTransaction keys #754, feat: Allow PublicKey for TopicCreateTransaction keys #809)

Documentation & Examples

• Added ReceiptStatusError documentation and example for transaction error handling (docs: add receipt_status_error.md and example script (fixes #878) #883)
• Added Hedera Network guide (fix: add guide on Hedera Network #874)
• New examples: topic_info.py, topic_message.py, topic_id.py, account_info.py, account_balance_query.py
• Token key examples: admin_key, supply_key, wipe_key, freeze_key, kyc_key, fee_schedule_key
• Split account_allowance_nft.py into separate approve/delete examples (feat: Split account_allowance_nft.py into approve and delete examples #781)
• Added training documentation for transaction receipts
• Added network_and_client.md guide with external example scripts

Bug Fixes

• Fixed max_automatic_token_associations to allow -1 (unlimited) (fix: Allow -1 for max_automatic_token_associations #793)
• Fixed staked node ID issue in account_create_transaction_e2e_test (fix: Staked node ID id issue in the account_create_transationt_e2e_test #828)
• Fixed KYC token example (fix: example kyc token #854)

CI/CD Improvements

• Added verification bot for unverified PR commits (feat: verification bot #756)
• Added failed workflow notification bot (feat: failed workflow bot #758)
• Upgraded dependencies: actions/checkout 5.0.0 → 6.0.0, step-security/harden-runner → 2.13.2, actions/setup-python 6.0.0 → 6.1.0