- Fixed Firefox binary startup issue and corrected FirefoxProfile serialization
- Added W3C‑compliant enhancements: new Element.rect method, updated timeout format, required capabilities preference, and support for geckodriver 0.15
- Deprecated Capabilities.isJavascriptEnabled
Selenium 3.3.1
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Added a new transport layer for generated BiDi modules and improved BiDi schema fidelity, including extensible types and validation of primitives.