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
thread_safe is a dependency of active_support
Use thor master to make rails work with Ruby 2.0
All green with Ruby 2.0 :green_heart:
Fix json params parsing regression for non-object JSON content.

Fixes #8845.
Merge pull request #8855 from dylanahsmith/parse-non-object-json-params

Fix json params parsing regression for non-object JSON content.
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]
remove_possible_method -> remove_method

  Date#to_time and Date#xmlschema methods defined in Ruby 1.9.3
Merge pull request #8896 from NARKOZ/patch-5

remove_possible_method -> remove_method