SBOLConverter.convert used in tests
SA.uris pass DeepSuparts, Features Tests
precedes works in MultiDeepSubparts Test

likely broke SpecifiedSubparts because there is a call specific to
"DeepSubparts" in Subpart.class
refactored SA.precedes into DeepSupart.class
SA.preceded pass for SpecifiedSubpart, Deep ok
uses SubThing to get SubScars - option1
add SpecifiedSubscar as an opt2:not used

disconnected state
separated out the SpecifiedSubscars to isolate it
cleaned up the SpecifiedSubscar refactor
specified subscars test passes

goes through specifed subscars backwards
added a write file to deal with this combo test