Fix comparability
Modify proxy to throw an exception.
Extend Exception instead of IOException
Stray ).
Exception is an interface.
Future.error.asStream()
Move dot-walking from EntityWrapper to RawEntity.
Proxy working well.
Merge pull request #4 from alxhub/fix-comparable

Fix ComparableMap to not use mixins since they have constructor issues.
Merge pull request #5 from alxhub/fix-error-handling

Fix a bunch of issues with Streamy and app integration, including proper handling of 404s, etc.