Remove queue-flow, migrate two files to ES6

[dfellis]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 34

• 491 of 538 (91.26%) changed or added relevant lines in 11 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+3.8%) to 88.326%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
lib/transports/server/http.js	24	25	96.0%
lib/transports/server/tcp.js	53	54	98.15%
lib/transports/server/childProcess.js	27	30	90.0%
lib/transports/client/tcp.js	112	115	97.39%
lib/transports/server/middleware.js	16	20	80.0%
lib/transports/shared/tcp.js	54	59	91.53%
lib/transports/client/childProcess.js	58	64	90.63%
lib/server.js	62	86	72.09%

Totals
Change from base Build 28:	3.8%
Covered Lines:	518
Relevant Lines:	565

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💛 - Coveralls