Merge pull request airbnb#54 from airbnb/jacknagz-csv-parser-bug-and-…

…unit-test-descriptions

[core][tests] csv parser bug and unit test descriptions

Merge pull request airbnb#34 from airbnb/jacknagz-refactor-streampayl…

…oad-class

Refactor StreamPayload, Parsers, Testing, and more

Official 1.0.0 Release