v9.3.0

• Add option to allow defaults to be mutable. b392f60
• Add beforeRedirect, beforeRetry, and afterResponse hooks. 325409c
• Retry on a few more errors. fbaaa2a
• Include body property in HTTPError. fdc0fa6
• Transform user set headers to lowercase. a07b2be
• Support Electron renderer timings. 25f18be

v9.2.0...v9.3.0