full_example.ttl contains invalid U+200B characters

[cmungall]

This file has unusual unicode zero-space-width U+200B line separator characters:

https://github.com/RDA-DMP-Common/RDA-DMP-Common-Standard/blob/master/ontologies/validation/full_example.ttl

If I try and run through a standard RDF processing tool like Apache-Jena riot, I get:

17:12:36 ERROR riot            :: [line: 26, col: 1 ] Failed to find a prefix name or keyword: ​(8203;0x200B)

The lines look normal here:

RDA-DMP-Common-Standard/ontologies/validation/full_example.ttl

Lines 26 to 28 in 1e9b558

	​
	​
	​

but actually it looks like this:

<U+200B>
<U+200B>
<U+200B>
#################################################################
#    Individuals
#################################################################
<U+200B>
###  https://w3id.org/dcso/id/example/contact_1
ex:contact_1 rdf:type owl:NamedIndividual ,
                      dcso:Contributor ;
             dcso:hasContactId ex:id_1 ;
             foaf:mbox "rleite@igc.gulbenkian.pt" ;
             dcso:role "project leader" ;
             foaf:name "Ricardo Leite" .
<U+200B>
<U+200B>