This commit makes Hash subclasses convert to HWIA by default for nested
objects of subclasses of Hash, but allows certain subclasses to prevent nested
conversion by introducing Hash#nested_under_indifferent_access that subclasses
can overwrite.

ActiveSupport::OrderedHash is one such subclass that overwrites
+nested_under_indifferent_access+, since implicitly converting it to HWIA would
remove the ordering of keys and values in Ruby 1.8.

This change is necessary because commit ce9456ec broke nested indifferent access
conversion for all subclasses of Hash.

old:
Hash.from_xml("<tag foo='bar'>\n</tag>")
=> {"tag"=>"\n"}

new:
Hash.from_xml("<tag foo='bar'>\n</tag>")
=> {"tag"=>{"foo"=>"bar", "__content__"=>"\n"}

Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

Ensure that HashWithIndifferentAccess duplication preserves class (for sublclasses) and default value [#5724 state:resolved]
Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

Allowing to_xml :camelize option to be set to :lower to enable lower-camelcase tags [#5903 state:resolved]

[#5775 state:resolved]
Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

This was a regression introduced in 5c858220. We bring
sorting back because people rely on it, eg for constructing consistent cache keys.

[#5175]

Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Add support for a type=binary with an optional encoding=base64. If the encoding attribute is absent, the data is considered unencoded.
[#2966 state:resolved]

[#3636 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

[#2732 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

Signed-off-by: NMichael Koziarski <michael@koziarski.com>

When using Hash#to_xml, any TimeWithZone objects now use xmlschema (iso8601), rather than a simple TimeWithZone#to_s.
Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

[#2190 state:resolved]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Delegate parsing to a switchable backend.

[#1617 state:resolved]

Signed-off-by: NFrederick Cheung <frederick.cheung@gmail.com>