Add GPS Exchange Format (GPX) type
They're XML files, so highlight them accordingly.
Wonder if we can be more clever here and fall back, if no specific highlighter is available, to use the XML one for any subclass of application/xml
They're XML files, so highlight them accordingly.
Wonder if we can be more clever here and fall back, if no specific highlighter is available, to use the XML one for any subclass of application/xml