- updated to version 4.2.1
* Fixed a problem where String#truncate_words would get stuck with a complex
string.

*Henrik Nygren*

* Fixed a roundtrip problem with AS::SafeBuffer where primitive-like strings
will be dumped as primitives:

Before:

YAML.load ActiveSupport::SafeBuffer.new("Hello").to_yaml # => "Hello"
YAML.load ActiveSupport::SafeBuffer.new("true").to_yaml # => true
YAML.load ActiveSupport::SafeBuffer.new("false").to_yaml # => false
YAML.load ActiveSupport::SafeBuffer.new("1").to_yaml # => 1
YAML.load ActiveSupport::SafeBuffer.new("1.1").to_yaml # => 1.1

After:

YAML.load ActiveSupport::SafeBuffer.new("Hello").to_yaml # => "Hello"
YAML.load ActiveSupport::SafeBuffer.new("true").to_yaml # => "true"
YAML.load ActiveSupport::SafeBuffer.new("false").to_yaml # => "false"
YAML.load ActiveSupport::SafeBuffer.new("1").to_yaml # => "1"
YAML.load ActiveSupport::SafeBuffer.new("1.1").to_yaml # => "1.1"

*Godfrey Chan*

* Replace fixed `:en` with `I18n.default_locale` in `Duration#inspect`.

*Dominik Masur*