cutting release 1.6.1 with various bug fixes

cutting release 1.6.1 with various bug fixes

Merge pull request airbnb#584 from airbnb/ryandeivert-1.6.0-bump

bumping version from 1.5.0 -> 1.6.0

Merge pull request airbnb#317 from airbnb/ryandeivert-cb-alert-watchl…

…ist-hit-feedsearch-binary-update

"other_hostnames" optional in "carbonblack:alert.watchlist.hit.feedsearch.binary"

Merge pull request airbnb#220 from airbnb/ryandeivert-another-logger-…

…tweak

[lambda][rule] logging incoming data after being pre-parsed instead of before

Merge pull request airbnb#163 from airbnb/ryandeivert-pylint-tests-an…

…d-cleanup-reorg

[tests] cleaning up unit tests in preparation of adding alert processor unit tests

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