Eager loading made to use relation's in_clause_length instead of host's one (fixes #8474)
Test nested fields with AssociationProxy mockup & fix AssociationProxy support in form helper
clearer conditional in constraint match check
Covering untested methods for ActiveModel::Errors
Merge pull request #8568 from inossidabile/fix-in_clause_length

Correct source for in_clause_length for eager loading (Fix for #8474)
Merge pull request #8623 from virusman/form_helpers_collectionproxy_fix

Fixed nested fields bug when called with AssociationProxy
Merge pull request #8866 from adomokos/adding_more_tests_to_errors_test

Adding tests to cover untested methods in errors_tests.rb
Merge pull request #8882 from goshakkk/clearer-conditional

Clearer conditional in constraint match check
Add changelog entry for scaffold generator and jbuilder changes

Introduced in 3bfd99defb559af0b017ee920ca714aa1e367fdd.
Related to #8840.

[ci skip]