0.38.0

Added

• http.rb integration (#529, #853)
• Kafka integration (#1070) (@tjwp)
• Span#set_tags (#1081) (@DocX)
• retry_count tag for Sidekiq jobs (#1089) (@elyalvarado)
• Startup environment log (#1104, #1109)
• DD_SITE and DD_API_KEY configuration (#1107)

Changed

• Auto instrument Faraday default connection (#1057)
• Sidekiq client middleware is now the same for client and server (#1099) (@drcapulet)
• Single pass SpanFilter (#1071) (@tjwp)

Fixed

• Ensure fatal exceptions are propagated (#1100)
• Respect child_of: option in Tracer#trace (#1082) (@DocX)
• Improve Writer thread safety (#1091) (@fledman)

Refactored

• Improvements to test suite (#1092, #1103)

Read the full changeset and the release milestone.