Evergreen

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- Revert "Don't allow futures to be used more than once"
- Break potential cycle because we are storing the traceback
- Fixed passing traceback when propagating exception to MAIN parent
- Process all callbacks using an Idle handle
- Replaced use of Future in io module for Result
- Don't wait for send operation to complete in UDPEndpoint
- Always run tests from the right directory
- Fix UDP test case on Windows
- Added flush() method to UDPEndpoint and Stream objects
- Cache sockname and peername properties

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- Added initial UDP support
- Use fibers instead of greenlet
- Make event loop API a bit more tulip-ish
- Added logging for certain exceptions in futures
- Don't allow futures to be used more than once
- Removed Future.running
- Removed empty TODO file
- Updated documentation

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- Added return value to Stream.write
- Added Stream.shutdown API
- Fixed using scoped IPv6 adresses
- Raise RuntimeError if task is joined before start
- Refactored error handling in io module
- Raised pyuv version dependency
- Updated documentation

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- Fixed monkeypatching SSLSocket object
- Fixed displaying correct version in docs
- Reorganized internal package structure

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- Added basic logger
- Added clear method to ReadBuffer
- Added PipeStream handle
- Added initial tests for io module
- Added workaround for loop stalling on Windows
- Removed EventLoop.run_in_executor API
- Removed Pool module
- Removed readable / writable properties from io streams
- Fixed errors on Windows platform
- Prevent destroy() from being executed if the loop is not running
- Convert errnos in io.tcp module
- Allow hostnames in TCPClient.connect, use getaddrinfo to resolve them
- Updated documentation

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- Initial release