Problem: xlink values are not url decoded when metsrw reads

[jrwdunham]

Expected behaviour

I expect that when I read and parse a METS XML file using metsrw that the FSEntry instances will have path attributes whose values are already URL-decoded for me.

Current behaviour

Resolution of #187 resulted in metsrw URL-encoding the values of xlink:href attributes in the XML that it writes. However, now when fsentry.path is accessed the resulting value (which comes from the xlink:href attribute) us URL-encoded and must be manually URL-decoded. This manual step should be unnecessary. URL encoding/decoding should be transparent to the user.

Steps to reproduce

Use metsrw to create a METS XML file that contains files whose paths contain characters that are not allowed in URLs, such as brackets. Then use metsrw to parse the file you have written, and iterate through the FSEntry instances returned by .all_files(). Each FSEntry instance will have a path attribute whose value is a URL-encoded path.

Your environment (version of Archivematica, OS version, etc)

metsrw==0.2.2

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