Release v0.2.9

Changes in this release

This release was automatically generated based on commit messages.

Version bump type: patch

Recent commits:

• chore: bump version to 0.2.9
• Merge pull request #72 from vgreg/69-attributeerror-orderexecutedpricemessage-object-has-no-attribute-price
• Fix AttributeError in OrderExecutedPriceMessage: use execution_price instead of price