Default to more restrictive backtrace configuration

Needed to avoid exposing stack traces in non-production but
non-development environments (e.g. "staging")

Author: arcreative

lib/jsonapi/configuration.rb

@@ -80,12 +80,12 @@ def initialize
       self.use_text_errors = false
 
       # Whether or not to include exception backtraces in JSONAPI error
-      # responses.  Defaults to `false` in production, and `true` otherwise.
-      self.include_backtraces_in_errors = !Rails.env.production?
+      # responses.  Defaults to `false` in anything other than development or test.
+      self.include_backtraces_in_errors = (Rails.env.development? || Rails.env.test?)
 
       # Whether or not to include exception application backtraces in JSONAPI error
-      # responses.  Defaults to `false` in production, and `true` otherwise.
-      self.include_application_backtraces_in_errors = !Rails.env.production?
+      # responses.  Defaults to `false` in anything other than development or test.
+      self.include_application_backtraces_in_errors = (Rails.env.development? || Rails.env.test?)
 
       # List of classes that should not be rescued by the operations processor.
       # For example, if you use Pundit for authorization, you might