" in XML element may not always be escaping

[owenzhao]

In xliff exported by Xcode, most of the time there is a note element, like this

<note>Class = "NSTextFieldCell"; title = "Table View Cell"; ObjectID = "2Mq-0d-Xix";</note>

When decoded and encoded by XMLCoder, the "s in the element's value are escaping.

<note>Class = &quot;NSTextFieldCell&quot;; title = &quot;Table View Cell&quot;; ObjectID = &quot;2Mq-0d-Xix&quot;;</note>

Both are accepted by Xcode. Just the latter is not as clear as the prior in raw format for human reading.

[MaxDesiatov]

With the new API in master you can do something like this:

let encoder = XMLEncoder()
encoder.charactersEscapedInElements = [
        ("&", "&"),
        ("<", "&lt;"),
        (">", "&gt;"),
        ("'", "&apos;"),
    ]

This will disable the " substitution, but preserve the rest of the default ones.