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Move pub/sub to ideas for now
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Use empty symbol instead of EmptySymbol class in Ruby 1.9
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Allow Python versions with any additional information
Add tests for prints with Unicode characters
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Add tests for hierarchies of objects
Add tests for Unicode symbols in Ruby
Add self() and make_ref() function to erlang modules
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Small optimization
Add message handler for Python 2
Add message handler for Python 3
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More unique timeout messages