Bug on parsing DID URLs with a path and fragment

[stevenvegt]

Expect this to succeed:

t.Run("ok - parse a DID URL", func(t *testing.T) {
    id, err := ParseDID("did:nuts:123/path#fragment")
    assert.NoError(t, err)
    assert.Equal(t, "did:nuts:123/path#fragment", id.String())
})

Get this instead:

=== RUN   TestParseDIDURL/ok_-_parse_a_DID_URL
    did_test.go:86: 
        	Error Trace:	did_test.go:86
        	Error:      	Received unexpected error:
        	            	character is not allowed in path
        	Test:       	TestParseDIDURL/ok_-_parse_a_DID_URL

It seems that this fails when there is a path present, but no query between path and the fragment.