onConfigured not called after rebind

[techfg]

Describe the bug
The rebind API applies the options passed to IM. While doing so, it "disables" functionality until its completed applying the new options (me.completed = false) but it does not fire any event when it completes. Calling IM methods (e.g. get) during the initialization process will result in Can't access data until binding complete. exceptions but there is no way to know when rebind is complete.

To Reproduce
Steps to reproduce the behavior:

1. Go to jsFiddle
2. Note the log under the image contains "onConfigured" since it was fired after initialization completed
3. Click on Rebind
4. Note that the log hasn't changed

Expected behavior
Similar to the way initialization works, onConfigured should be fired (if defined) so that consumer knows when IM is ready for use again.

Screenshots
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Desktop (please complete the following information):
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Smartphone (please complete the following information):
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Additional context
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