v5.0.0

Enhancements

• Remove RoutingError from default ignore classes
  | #308
• Prefer BUGSNAG_RELEASE_STAGE over RAILS_ENV for release_stage
  | #298
• Apply grouping hash if method bugsnag_grouping_hash is available on the object
  | #318
  | #311
• Sidekiq improvements
  | #317
  | #282
  | #309
  | #306

Fixes

• Exception backtrace could be empty
  | #307