[Python SDK] Make from_str strict, add from_str_relaxed (#9642)

ecosystem/python/sdk/CHANGELOG.md

@@ -3,16 +3,17 @@
 All notable changes to the Aptos Python SDK will be captured in this file. This changelog is written by hand for now.
 
 ## 0.7.0
-- Port remaining sync examples to async (hello-blockchain, multisig, your-coin)
-- Updated token client to use events to acquire minted tokens
-- Update many dependencies and set Python 3.8.1 as the minimum requirement
-- Add support for an experimental chunked uploader
-- Add experimental support for the Aptos CLI enabling local end-to-end testing, package building, and package integration tests
+- **[Breaking Change]**: The `from_str` function on `AccountAddress` has been updated to conform to the strict parsing described by [AIP-40](https://github.com/aptos-foundation/AIPs/blob/main/aips/aip-40.md). For the relaxed parsing behavior of this function prior to this change, use `AccountAddress.from_str_relaxed`.
 - **[Breaking Change]**: Rewrote the large package publisher to support large modules too
 - **[Breaking Change]**: Delete sync client
 - **[Breaking Change]**: Removed the `hex` function from `AccountAddress`. Instead of `addr.hex()` use `str(addr)`.
 - **[Breaking Change]**: The string representation of `AccountAddress` now conforms to [AIP-40](https://github.com/aptos-foundation/AIPs/blob/main/aips/aip-40.md).
 - **[Breaking Change]**: `AccountAddress.from_hex` and `PrivateKey.from_hex` have been renamed to `from_str`.
+- Port remaining sync examples to async (hello-blockchain, multisig, your-coin)
+- Updated token client to use events to acquire minted tokens
+- Update many dependencies and set Python 3.8.1 as the minimum requirement
+- Add support for an experimental chunked uploader
+- Add experimental support for the Aptos CLI enabling local end-to-end testing, package building, and package integration tests
 
 ## 0.6.4
 - Change sync client library from httpX to requests due to latency concerns.