Morpho

Add support for retrieving online data into Morpho for local viewing (i.e. when
online urls retrieve a text data stream)

Relevant part from Matt's reply...
There are a lot of issues associated with data to be found at an
onlineUrl, not the least of which is that it might not be data at all
that we find there. EML's support for both 'download' and 'information'
URLs should help us differentiate here, but my guess is that we can
generally expect to find lots of things other than the actual data at
those URLs. So we'll probably have to do a lot of data validation to
make this work. If we were to do so, I think it would make a nice
feature.