0.39.0

Added

• JRuby 9.2 support (#1126)
• Sneakers integration (#1121) (@janz93)

Changed

• Consistent environment variables across languages (#1115)
• Default logger level from WARN to INFO (#1120) (@gingerlime)
  • This change also reduces the startup environment log message to INFO level (#1104)

Fixed

• HTTP::StateError on error responses for http.rb (#1116, #1122) (@evan-waters)
• Startup log error when using the test adapter (#1125, #1131) (@benhutton)
• Warning message for Faraday < 1.0 (#1129) (@fledman, @tjwp)
• Propagate Rails error message to Rack span (#1124)

Refactored

• Improved ActiveRecord documentation (#1119)
• Improvements to test suite (#1105, #1118)

Read the full changeset and the release milestone.