Frictionless data packages produced on Windows cannot be read on Linux

[as2875]

Take the introductory example. population.csv and cities.csv are on disk.

1. Create a package on a Windows machine

   package = Package()
   package.infer("*.csv")
   package.save("datapackage.zip")

2. Trying to read on a Linux machine gives an error because the resource paths in datapackage.json use escaped backslashes \\, but Linux uses slashes /.

@sje30, for reference.

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Please preserve this line to notify @roll (lead of this repository)

[roll]

Thanks, we're going to start Windows testing to resolve this and similar problems - https://github.com/frictionlessdata/datapackage-py/issues/266

[roll]

MERGED into https://github.com/frictionlessdata/frictionless-py/issues/388 as we're going to provide first-class support for Mac/Windows in Frictionless.

There are some doubts that we have enough resources to replicate the effort to the datapackage library. But if it's really needed exactly for datapackage please re-open the issue :+1: