[Performance Advice] key parameter for text() function

[ghost]

Overview

This is a recommendation and discussion for implementing a key parameter for the ID.text() function. The reason why I am recommending that is because there can be performance losses when using for or if statements directly on text nodes because the library's "reconciliation" algorithm may not know which text nodes were added, removed, or shuffled.

Possible changes

Instead of text(value, ...formatters), the text() function could have the following signature:

text(value, key = null, ...formatters)

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I hope this advice helps incremental-dom with a performance boost.