AsyncFP Release 1.3.3--Critical bug fix, faster messaging

Sending a message to an empty mailbox is now 10 times faster, as it is now done synchronously.

A critical bug has been fixed in RecordUpdate.

The Mailbox class in now a trait implemented by ReactorMailbox and AsyncReactorMailbox. (AsyncReactorMailbox is for use by Actors which do blocking I/O.)

Bill La Forge
https://github.com/laforge49/Asynchronous-Functional-Programming/wiki