Major Description
When processing tika-mimetypes.xml, additional supertype information should be set so that the right parser gets called if there's no explicit parser for that mime-type.
Jukka suggested:
The type registry could do with some implicit supertype settings like the following (in order):
- a type with an explicit <sub-class-of/> setting is a specialization
of the specified type - a type with parameters is a specialization of the same type without parameters
- all /+xml types are specializations of application/xml
- all text/* types are specializations of text/plain
- everything is a specialization of application/octet-stream
