pipes-concurrency-2.0.2

• Removed CPP extension
• Increased upper bound on pipes to < 4.2
• Added New and Newest mailboxes

pipes-concurrency-2.0.1

• Fixed the Alternative instance for Input.

pipes-concurrency-2.0.0

• Switched the names for Input and Output
• New spawn' command that allows prompter release of Inputs and Outputs
• Exposed Input and Output internal machinery
• New Monoid instance for Output
• Generalized types to use MonadIO
• Simplified semantics of spawn