Streams can be constructed from ReducibleType.
Initial test of initializing Stream with ReducibleType.
Add a BoxType protocol.
Add MutableBox.
Add a deferred memoizing type.
Public initializers & property.
Test that Memo doesn’t duplicate effects.
Failing test of Stream’s referential transparency.
Stream memoizes.
Deeper test of first/dropFirst.
Stream conforms to SequenceType.
Test that Stream can be zipped.
Needn’t parenthesize this.
Docs.
Newline at EOF.
Merge pull request #6 from robrix/reducible-iteration

Reducible iteration