private method doesn't work for singleton methods defined this way
Add tests to ActiveSupport:XmlMini to_tag method
Fix insertion of records for hmt association with scope, fix #3548
Auto-generate stable fixture UUIDs on PostgreSQL.
Fixes: #11524
Merge pull request #12016 from roderickvd/uuid_fixes

Auto-generate stable fixture UUIDs on PostgreSQL

Conflicts:
	activerecord/CHANGELOG.md
	activerecord/lib/active_record/fixtures.rb
	activerecord/test/cases/adapters/postgresql/uuid_test.rb
	activesupport/CHANGELOG.md
Keep debugger support only for rubies < 2.0.0
Update Gemfile templates to provide correct debugger
Update debugging guide to use byebug
Expand explanation of how to set secrets.yml. [ci skip]
Merge pull request #14654 from Alamoz/secret_key

Expand explanation of how to set secrets.yml.
depend_on_asset is not required anymore on sprockets-rails 2.1.2
Add missing require so requiring `active_support/cache` works again.
Merge pull request #14667 from lucasmazza/require-per-thread-registry

Add missing require so requiring `active_support/cache` works again.
Avoid URI parsing

This parsing is unecessary once the Request object already has the
needed information.
Merge pull request #14665 from andrielfn/avoid-uri-parsing

Avoid URI parsing
The `source` option for `has_many => through` should accept String
values.

With the changes introduced by 16b70fddd4dc7e7fb7be108add88bae6e3c2509b
it was expecting the value to be a Symbol, while it could be also a
String value.
Merge pull request #14668 from laurocaetano/source_option_with_string_value

The :source option for has_many => through should accept String values.
add services: memcache to travis
Merge pull request #14671 from arthurnn/travis_memcache

add services: memcache to travis
Make the reflections cache work with strings as its keys.