Removing ZipTable from library

[oserban]

No description provided.

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[jgehring]

Thanks for the fix, @oserban. However, nn.ZipTable was added very recently to nn and is thus not available in a standard install via torch/distro, for example. As a temporary workaround, can you please leave ZipTable.lua in place and wrap the require like this:

if not nn.ZipTable then
    -- ZipTable is missing from older nn versions
    require 'rnnlib.nn.ZipTable'
end

Once the nn version in torch/distro is up to date we can happily drop the duplicated code.

[oserban]

Cheers @jgehring for the suggestion. Better keep everything backward compatible ...

[jgehring]

Thanks a lot!