Feature/dwctypes

Immediately after the merge to master, changes have to be done to switch the file location references from the branch to master. This should be done in the master branch by first substituting "master" for the branch ("feature/dwctypes" in my case) everywhere it occurs in the edited files. In the case for this branch, in bco.owl in the line (currently line 28, https://github.com/tucotuco/bco/blob/feature/dwctypes/src/ontology/bco.owl#L28)

<https://raw.githubusercontent.com/tucotuco/bco/feature/dwctypes/src/ontology/dwctype.owl> ,

and in dwctype.owl in the lines (currently lines 13 and 15, https://github.com/tucotuco/bco/blob/feature/dwctypes/src/ontology/dwctype.owl#L13)

@base <https://raw.githubusercontent.com/tucotuco/bco/feature/dwctypes/src/ontology/dwctype.owl> .

<https://raw.githubusercontent.com/tucotuco/bco/feature/dwctypes/src/ontology/dwctype.owl> rdf:type owl:Ontology ;

All of this will reset the master to use the latest vetted (merged) version of the ontology.