Initial commit on testing population counts
separated summarize functionality into units
updated tests to use new summarize interface
misc updates
added serialization test and functionality, various updates
fixed fetch test and added tests for summarize
updated catch_up_summaries and scraper
small update to serialization
Merge pull request #217 from bepetersn/v2.0-dev

V2.0 dev -- updated SummarizeDailyPopulation, added its tests
VS2.25 - added calculation of initial starting population
Merge branch 'v2.0-dev' of https://github.com/sc3/cookcountyjail into v2.0-dev
VS2.25 - changed Daily Population to use directory instead of file
VS2.25 - added returning starting_population counts
VS2.25 - added storing starting_population counts
VS2.25 - changed storing starting_population to accept starting population date and added documentation
VS2.25, VS2.21 - updates population counts and stores full summary entry without extensive error checking.
VS2.25, VS2.21 - fixed, broken sets except for summarize ones