connectionStatus.reset should trigger 'reset' event

[gr2m]

connectionStatus.reset should trigger a reset event as mentioned in the README, which it currently does not.

connectionStatus.on('reset', function () {
  console.log('reset triggered')
})
connectionStatus.reset(options).then(function () {
  // "reset triggered" logged.
})

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• [x] claim this issue (comment below)
• [x] start a pull request
• [x] write tests
• [x] implement
• [x] review & merge

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