Fix typo in nodoc should be `:nodoc:` for RDoc to parse correctly
[ci skip] Fix HTML format on comment
Merge pull request #18081 from yui-knk/fix/capture_helper

[ci skip] Fix HTML format on comment
Relax the UUID regex

Apparently PG does not validate against RFC 4122. The intent of the original
patch is just to protect against PG errors (which potentially breaks txns, etc)
because of bad user input, so we shouldn't try any harder than PG itself.

Closes #17931
`db:structure:load` and `db:schema:load` no longer purge the database.

Closes #17945

`db:test:prepare` still purges the database to always keep the test
database in a consistent state.

This patch introduces new problems with `db:schema:load`. Prior
to the introduction of foreign-keys, we could run this file against
a non-empty database. Since every `create_table` containted the
`force: true` option, this would recreate tables when loading the schema.

However with foreign-keys in place, `force: true` wont work anymore and
the task will crash.

/cc @schneems
adds another examle to the constants not missing gotcha [ci skip]

/cc @matthewd
passed a spell checker, not bad [ci skip]
Spelling fix [ci skip]
Merge pull request #18087 from georgemillo/patch-2

Spelling fix [ci skip]
Add docs for AS::TestCase::test_order

Document `test_order` and `test_order=` from `ActiveSupport::TestCase`.

[ci skip]
Merge pull request #18077 from claudiob/add-docs-for-test-order

Add docs for AS::TestCase::test_order
Enable Travis CI container-mode

And also bundler cache
Output extension is no longer generated [ci skip]

/cc @senny Is this change documented somewhere?
Revert "Merge pull request #18003 from sikachu/permit_all_parameters-thread-safety"

This reverts commit da5cc10e945552da54234f858470238a3fc36767.

Fixes #18091

See also https://github.com/rails/rails/pull/18003#commitcomment-9030909
Use released rack

`rack.version` was bumped in https://github.com/rack/rack/commit/28e77c710ac2ddb35c436d78d72e28f28f964446
`force: :cascade` to recreate tables referenced by foreign-keys.
Merge pull request #18082 from rails/17945_purge_in_test_only

`db:schema:load` and `db:structure:load` do not purge the database
Use released I18n 0.7.0
Remove rack and i18n master from bug report tempaltes [ci skip]
last pass to the autoloading guide before release [ci skip]