Release TON-SDK 1.18 & ton-client-js 1.18.1

[Kronchs]

⚡️Release TON-SDK 1.18 & ton-client-js 1.18.1


New
- Iterators in net module: robust way to iterate blockchain items (blocks, transactions)
in specified range. See documentation for create_block_iterator, create_transaction_iterator,
resume_block_iterator, resume_transaction_iterator, iterator_next, iterator_remove
functions.
- Library adds http:// protocol to endpoints localhost, 127.0.0.1, 0.0.0.0 if protocol
isn't specified in config.
- Debot module:
  - added tests for Json interface.

Improved
- Error messages regarding Union-typed parameters (e.g. abi and signer in encode_message): helper functions (e.g. signerNone, signerKeys, etc.) are suggested if applicable.

Stay tuned for more updates!