Authorship tracking for FRAME runtimes.
This tracks the current author of the block and recent uncles.
A filter on uncles which verifies seals and ensures that there is only one uncle included per author per height.
A filter on uncles which verifies seals and does no additional checks. This is well-suited to consensus modes such as PoW where the cost of equivocating is high.
Error for the authorship module.
An event handler for the authorship module. There is a dummy implementation
Additional filtering on uncles that pass preliminary ancestry checks.