remove unnecessary require

AS::Multibyte are no longer required by access and filters string
core extensions.
make AS::Multibyte::Chars work w/o multibyte core ext

Use ActiveSupport::Multibyte::Chars.new instead of String#mb_chars.
It allows to use ActiveSupport::Multibyte::Chars without requiring
String multibyte core extension.
Merge pull request #6522 from lest/patch-1

ActiveSupport require and dependencies
Exceptions like Interrupt should not be rescued.

Neither Test::Unit nor MiniTest rescue exceptions like Interrupt or
NoMemoryError, but ActiveSupport::Testing::SetupAndTeardown#run which
overrides MiniTest::Unit::TestCase#run rescues them.

Rescuing an Interrupt exception is annoying, because it means when you
are running a lot of tests e.g. when running one of the rake test tasks,
you cannot break out using ctrl-C.

Rescuing exceptions like NoMemoryError is foolish, because the most
sensible thing to happen is for the process to terminate as soon as
possible.

This solution probably needs some finessing e.g. I'm not clear whether
the assumption is that only MiniTest is supported. Also early versions
of MiniTest did not have this behaviour. However, hopefully it's a
start.

Integrating with Test::Unit & MiniTest has always been a pain. It would
be great if both of them provided sensible extension points for the kind
of things that both Rails and Mocha want to do.
Add support for CollectionAssociation#delete by Fixnum or String

I found the next issue between CollectionAssociation `delete`
and `destroy`.

    class Person < ActiveRecord::Base
      has_many :pets
    end

    person.pets.destroy(1)
    # => OK, returns the destroyed object

    person.pets.destroy("2")
    # => OK, returns the destroyed object

    person.pets.delete(1)
    # => ActiveRecord::AssociationTypeMismatch

    person.pets.delete("2")
    # => ActiveRecord::AssociationTypeMismatch

Adding support for deleting with a fixnum or string like
`destroy` method.
Parse float value only once in number helpers

Refactor number helpers output with safety handling to call float
parsing only once. Also remove 'erb' require.
Merge pull request #6511 from frodsan/add_fixnum_string_support_for_delete

Add support for CollectionAssociation#delete by Fixnum or String
Allow blocks for count with ActiveRecord::Relation. Document and test that sum allows blocks
Yield only one argument instead of splatting.

Add Changelog entry. Closes #4003
Review requires from number helper

Some of these requires are now only necessary in
ActiveSupport::NumberHelper. Add hash/keys require due to symbolize_keys
usage in number helpers. Also remove some whitespaces.

Closes #6414
Fix failing build related to change in CollectionAssociation#delete

Merge commit 6f1d9d00ffd9d411b2bd488da4eb92b7e2fd972e
Add note about CollectionAssociation#delete change to upgrading guide [ci skip]
Add tests to delete by fixnum or string id with has many through associations
Merge pull request #6527 from frodsan/add_test_to_delete_by_fixnum_or_string

Add tests to delete by fixnum or string id with has many through associations
decoupling activesupport performance testing from actionview and adding tests
Merge pull request #6526 from appfolio/decoupling_activesupport_from_actionivew

Decoupling ActiveSupport from ActionView
update Gemfile template to 1.9 hash syntax
Merge pull request #6528 from frodsan/update_hash_syntax_gemfile_template

update Gemfile template to 1.9 hash syntax
Avoid dependency on MiniTest::Unit::TestCase::PASSTHROUGH_EXCEPTIONS.
Merge pull request #6525 from freerange/minitest-passthrough-exceptions

Exceptions like Interrupt & NoMemoryError should not be rescued in tests.