fixed missing comma in example

Revert "`belongs_to :touch` behavior now touches old association when transitioning to new association" until a proper fix is found for #10197

ActiveRecord having clause bug fix

refactor initialization of array

The changes in b79adc43 had a bug where if the time in the String
was in standard time but the current time was in daylight savings then
the calculated adjustment was off by an hour.

This commit fixes this and adds extra tests for the following:

* time in string is standard time, current time is standard time
* time in string is standard time, current time is daylight savings
* time in string is daylight savings, current time is standard time
* time in string is daylight savings, current time is daylight savings

Fixes #10306.

extract arrays to constants in Mapper

Remove redundant variable

Use MethodNotAllowed exception rather than UnknownHttpMethod

Created a registry for ActiveSupport::Subscriber queues

subscriber queues. Helps limit the number of thread locals.

Also assign nil in dirty nullable_datetime test. Closes #10237

Update counter cache when pushing into association

extract no content response codes to a constant

[ci skip]

Fixes skipping object callback filters

extract array to a constant

This commit fixes a regression bug in which counter_cache columns
were not being updated correctly when newly created records were
being pushed into an assocation. EG:

    # this was fine
    @post.comment.create!

    # this was fine
    @comment = Comment.first
    @post.comments << @comment

    # this would not update counters
    @post.comments << Comment.create!

Extract path into variable

fix README links in the main README.md

fix wrong test description and failure message

Added tests for if condition in Active Model callbacks

Removing tests for deprecated options in active support.