remove deprecated implicit join references.
fetch value(s) from stringified options
Update a broken link into the fixtures' template
Merge pull request #11175 from robin850/patch-4

Update a broken link into the fixtures' template [ci skip]
Merge pull request #11152 from senny/remove_implicit_join_references

remove deprecated implicit join references
provide a more sementicthe local variables name for ActiveModel::Validations::Clusivity#include? method
the original name `exclusion` is a bit confusing when using with the method `inclusion_method`
rename it to a more logic neutral name.
Merge pull request #11156 from JonRowe/fix_tags_picking_string_keys_from_non_stringified_options

Fetch value(s) from stringified options in tags that stringify options
Merge pull request #11177 from yangchenyun/mine

provide a more sementic local variables name in ActiveModel::Validation::Clusivity
Merge pull request #11176 from schneems/schneems/plugin_new_help_fix

Fix `rails plugin --help`
Remove a duplicated section [ci skip]

Attachments were previously covered so remove the useless part. Just
move a note about multipart headers set when the mail method is
triggered to the kept section.
Added clarification for destroy link_to description in 5.14 [ci skip]
Typo in Active Record Migrations Guide [ci skip]
Clean the code a bit
Merge pull request #11190 from dkaplan88/typo

Typo in Active Record Migrations Guide
Merge pull request #11189 from jetthoughts/destroy_link_description_for_getting_started

Added clarification for destroy link_to description in 5.14
Merge pull request #11180 from robin850/patch-5

Remove a duplicated section [ci skip]
Synchronize PostController#create code from 5.6 to others sections. [ci skip]

Fixed `permit` using for comments.
remove evals from AM::Validations::Callbacks
follow the same refactor at a63a964a5d1ed02cf0df1b1a33a96ed2a9fa987b
don't shadow `through_scope` method name with local var.
Merge pull request #11186 from jetthoughts/synchronize_create_method_body

Synchronize PostController#create code from 5.6 to others sections in Getting Started guide.