Refactors to the codebase (work in progress).
Added gtfs-parser as subproject. Made opentransit a subproject.
GTFS tests passing, working through opentransit compile errors.
Refactors, opentransit subproject compiling.
Updated tests. Started refactor of tests.
Merged in upstream, reimplemented indicators, scattered TODOs
Initial commit of refactor
Merge pull request #236 from WorldBank-Transport/feature/indicator-refactor

Feature/indicator refactor