Uncaught URIError: URI malformed with special characters

Hi!

Pretty much as described in [this previous issue](https://github.com/43081j/id3/issues/22#issuecomment-93801484) I get an exception thrown when tags contain special characters like french accents (e.g. "Interprètes").

I read about `decodeURIComponent` causing [issues](https://github.com/43081j/dataview-extra/issues/1#issuecomment-27976566) with some UTF-8 characters, which is the [reason why](https://github.com/43081j/id3/pull/16#issuecomment-42767227) `escape()` is used in the first place, but can't seem to reproduce them as of now.

Any update on this?

Thanks!