Benchmark typing latency

This article: https://pavelfatin.com/typing-with-pleasure/ has a really great and in-depth investigation into the typing latency of various editors. This latency - the time from pressing the key to seeing the result on the screen - is incredibly important especially with developers. This latency is a huge part in whether an editor is a joy to use or if it feels slow.

For this work, we should look at the following:

• What are the current measurements of typing latency?
• What can we do to improve?
• Can we add metrics so that build-over-build we can see how the latency changes?