Implement `serve` on the middleware.  Nothing can be placed between the
instance of FileHandler and Static because Static instantiates an
instance of FileHandler.  IOW there is no reason to implement the `call`
API in this case.

Use memoization for collection associations ids reader

Fix STATS_DIRECTORIES warning by only loading statistics.rake once

When running rake stats from inside an engine,
the engine's Rakefile attempts to reload
statistics.rake after the test app loads it, which
results in STATS_DIRECTORIES being redefined and
an annoying warning. This patch skips loading
statistics.rake from tasks.rb if rake's current
scope isn't empty, i.e. if we are running from
inside an engine and not the test app dir or a
normal app.

Fixes #20510.

set the correct path to `ActionDispatch::IntegrationTest.fixture_path`

Remove duplicated `Array#to_param`

Fix Encoding::UndefinedConversionError with multibyte UTF-8 filename containing "%" character

Fix test session fetch

Better docs for ActiveRecord::Migration#table_name_options

Small fix [ci skip]

allow testing controllers that use session#fetch with a default value.

we don't recycle requests anymore, so we shouldn't need to recycle
cookie jars

this prevents the middleware from knowing the specific key for the jar

This changes the chained jars to ask the parent jar for the request
object which should eventually call back up to the original jar

stop using deprecated `render :text` in railties

Documentation: correct instructions for using Sass with the asset pipeline [ci skip]

[ci skip]

Documentation: update queue_classic info in Active Job adapters list

eventually we will make the cookie jar derive these values from the
request object rather than save a reference to the values

The cookie jar can just ask the request object for the information it
needs.  This allows us to stop allocating hashes for options, and also
allows us to delay calculating values in advance.  Generating the
options hash forced us to calculate values that we may never have needed
at runtime

Accessing a request object has nice advantages over accessing a hash.
If you use a missing method name, you'll get an exception rather than a
`nil` (is one nice feature)

This decouples the `call` method from knowing the SCRIPT_NAME key and
offloads decisions about how to access script_name

This way JobSerializationTest runs in isolation without errors.

Add dev caching toggle / server options

Taken from @Sonopa's commits on PR #19091.

Add support for dev caching via "rails s" flags.

Implement suggestions from @kaspth.

Remove temporary cache file if server does not have flags.

Break at 80 characters in railties/CHANGELOG.md

Remove ability to disable cache based on server options.

Add more comprehensive options: --dev-caching / --no-dev-caching

Should use `server_info[:version]` instead of `info[:version]`