0.43.0

Added

• Background job custom error handlers (#1212) (@norbertnytko)
• Add "multi" methods instrumentation for Rails cache (#1217) (@michaelkl)
• Support custom error status codes for Grape (#1238)
• Cucumber integration (#1216)
• RSpec integration (#1234)
• Validation to :on_error argument on Datadog::Tracer#trace (#1220)

Changed

• Update TokenBucket#effective_rate calculation (#1236)

Fixed

• Avoid writer reinitialization during shutdown (#1235, #1248)
• Fix configuration multiplexing (#1204, #1227)
• Fix misnamed B3 distributed headers (#1226, #1229)
• Correct span type for AWS SDK (#1233)
• Correct span type for internal Pin on HTTP clients (#1239)
• Reset trace context after fork (#1225)

Refactored

• Improvements to test suite (#1232, #1244)
• Improvements to documentation (#1243, #1218) (@cjford)

Read the full changeset and the release milestone.