5.23.0

Features

• Add correct breadcrumb levels for 4xx/5xx response codes (#2549)

Bug Fixes

• Fix argument serialization for ranges that consist of ActiveSupport::TimeWithZone (#2548)
• Prevent starting Vernier in nested transactions (#2528)
• Fix TypeError when Resque.inline == true (#2564)

Internal

• Use File.open in LineCache (#2566)
• Update java backtrace regexp (#2567)
• Stop byteslicing empty strings in breadcrumbs (#2574)

Miscellaneous

• Deprecate enable_tracing in favor of traces_sample_rate = 1.0 #2535