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Added expansion [...] -> [i,j] etc.
Removed sink naming: produced unnecessary code in untangle.
Made scatter propagation let scatter*scatter=scatter.
Wrote first attempt at scatter propagation.
Added name preprocessing to pshow_dag
Added equality comparison for Expression.
Changed tangle(code) to return only sink.
Merge branch 'master' of github.com:toivoh/julia-kernels into dev
Added copyright notice.
Renamed test script.
Renamed some test files.
Moved out some outdated tests and updated a current one.
Wrote name_nodes_uniquely and new name_fanout_nodes using rewrite_dag.
Moved @failexpect into its own file in utils/
Added simple req() function to avoid doubleloading .jl files.
Moved scattered() from dag/transforms.jl into midsection.jl
Updated references to files in dag/
Moved DAG files into their own subdirectory.
Moved out utils/prettyshow and copied in prettyshow from julia-pretty…
Tidied up kernels.jl a bit.
Renamed bottom --> sink
Removed dependencies on utils.jl.
Tidied some more and made an autowrap disable that hopefully works.
Made autowrapping conditional, and tidied up a bit.