Merge remote-tracking branch 'drart/master'

* drart/master:
  introduction, citations, and abstract, oh my
Improves performance section. General editing and formatting.
Minor edits and notes added.
Merge branch 'master' of https://github.com/colinbdclark/flocking-papers
Adds first stab at an "Approach" section.
Also adds notes for a "next steps" section at the end.
Expands approach section with consideration of interoperability
and how systems model changes and events.
Winds up The Approach section.
Boots conceptual section about unification of micro and macro level
to a new Scheduler section that needs substantial fleshing out as
well as, of course, examples.
More edits to The Approach section.
Adds notes for several as-yet-unwritten sections.
Merge branch 'master' of https://github.com/colinbdclark/flocking-papers
added references and integrated screenshots