* add `pop_blocks` to the difficulty cache
* add a rolling median struct
* use RollingMedian in weight cache
* add pop_blocks to weight cache
* add alt context cache
* add getting alt RX vms
* rework alt cache
* add alt block verify function
* keep alt caches around
* add alt checked alt blocks to the cache
* check the alt blocks timestamp
* add docs + cleanup code
* add popping blocks from the context cache
* finish popping blocks + fix tests
* fix doc
* add a test popping blocks from HF cache
* add a request to clear alt caches
* add back lint
* Apply suggestions from code review
Co-authored-by: hinto-janai <hinto.janai@protonmail.com>
* review fixes
* small changes
* change panic doc
---------
Co-authored-by: hinto-janai <hinto.janai@protonmail.com>
