Please run TSAN on this diff since the revert was tested that way. We should expect it to pass if it's really fixed.

Fix "code block" styling for doc contents

Let's just stick with ABC for now then..

Ideally this needs a test, but there's a lot to be desired in the existing mining tests...

Simplified and made the implementation more robust to certain edge cases.

Other than some readability and mutability improvements in the tests, the rest looks good to me.
I did notice the spec is actually lacking in some regards (the implementation actually made it more clear than the pseudo-code) , so I made the appropriate notes there: https://github.com/bitcoincashorg/bitcoincash.org/pull/509#pullrequestreview-467735897

Removed dev manager note

Updates regarding automated items

Rebase. See updated summary.

I'll do another pass once the spec is nailed down in an accessible place.

Removed future versions, given the current climate