serialization 0.10.0

Provide a serialization facility for Dart objects.

0.10.0

• BREAKING CHANGE: serialization.dart no longer imports dart:mirrors by default. If you want mirrors, import serialization_mirrors.dart instead. Note that the default ordering of rules has also changed, because the non-mirrored version no longer includes SymbolRule, so even in the mirrored version it occurs later in the order. So even if you are still using mirrors, data serialized using an older version with default rule setup may not deserialize in this version. If you need to do this, you can explicitly create a Serialization instance with the old numbering.