Feature Request: Add method to delete an item based on the value (not key)

[andrei93r]

As context, I want to use this library to request information from multiple providers based which have different quota's to respect.

[eyas-ranjous]

@andrei93r I have opened a draft PR for your request, and will be finalizing it soon, mainly you will be able after releasing this to deleteByKey that deletes a single item from the table & deleteByValue(value) that deletes all items that has a value that match the one to be deleted. Let me know there is something else missing, also it'd be helpful for me if you can provide me with a code snippet that shows your use case, to make sure I'm building it for easy use.

[eyas-ranjous]

v2 is released with deleteByValue https://github.com/eyas-ranjous/round-robin-js#deletebyvaluecb