graphql 0.6.2

Thanks to the excellent contributions from community members both in the form of code, careful review, and thoughtful discussion. This version of GraphQL fixes a handful of issues

New:

Union type definitions may now accept list of possible Types as a "thunk". (#436 @ekosz)
List fields can now return any iterable collection, not limited to Array, including Backbone.Collection, or Immutable.js Lists. (#449, #300 @mwschall)

Fixed:

Ensure source code is only ASCII. (#429 @kassens)
astFromValue() now requires a Type as a second parameter and properly serializes Enums with different internal values. (#435 @nodkz)
GraphQLError.stack is now a writable property, fixing issues in Bluebird and other libraries which use a brand-check for Error. (#439 @alexturek)
GraphQLError.message, GraphQLError.locations, and GraphQLError.path are now enumerable properties, which means JSON.stringify() will now produce a value which is compliant with the GraphQL spec. (#426 @bnewtonius)
Field errors are now thrown when values are resolved for fields typed Int or Float which are not representable by those types, improving debugability and spec compliance. (#391 @stubailo)
Errors during field value completion (e.g. a value returned of an incorrect type) now include location information. (#445)