[Breaking Changes] Thread naming refactor#19

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ArjunBhuptani wants to merge 15 commits intoSpankChain:masterfrom

connext:thread-refactor

Commits on Aug 16, 2018

fixed joinChannel success case bug all passing
ArjunBhuptani
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Commits on Aug 19, 2018

consensusClose unit tests, all passing
ArjunBhuptani
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Commits on Aug 20, 2018

Commits on Aug 21, 2018

initVCstate complete. Wow, this one sucked (still todo 1 test)
ArjunBhuptani
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Commits on Aug 22, 2018

settleVC tests (missing 3/14 because unclear how to test these)
ArjunBhuptani
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closeVirtualChannel tests + 'vc already closed' tests for initVC and settleVC. Everything passing!
ArjunBhuptani
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