Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

DEBUG_BIG_RO_TX_KB - print logs with info about large read-only transactions
DEBUG_BIG_RW_TX_KB - print logs with info about large read-write transactions
DEBUG_SLOW_COMMIT_MS - print logs with commit timing details if commit is slower than this threshold 

* Only insert hard-coded tips if both DB and files recovery failed

* Prevent deadlock

* Report some efficiency numbers

* Count properly unrequested bodies

* Initialise allRequests

* Increase timeout

* Fixes to scheduling

* Small fix

* Simplified scheduling

* Remove separate bodyLoop goroutine

* Update from DB at the beginnig of block bodies forward

* Timeout for repeating the request cycle

* Fix timeout

* Fix

* Increase timeout

* Increase timeout

* Try to make flow if possible

* Fix flow

* Lower timeout

* timeout for each blockNum

* Adjustable timeout

* Better log timing

* Track peers

* copy peerID

* fix scheduling

* Too much logging

* Print delivery speed

* Print committed blocks

* Fix race

* Sentry to only reset back-off timer when response to a request is received

* Print bytes/sec and wasted traffic

* Fix bandwidth accounting

* Less logging

* not to wake up on deliveries

* Spam every second

* Print peer map

* Fix npe, print requests

* Timestamps

* Improved logging

* Penalty for peers

* Log penalties only when disconnecting

* Try with smaller window

* window parameter

* Dealing with partially delivered requests

* Init bodyReq

* Fix array index

* More fix for NPE

* More NPE checks

* Print out body progress and header progress

* Fix ending condition

* Bring back waking up and penalties

* Fix duplicate tip

* Duplicate segment

* Fix lint

* Fix lint

* fix lint

* Fix lint

* Hard coded headers in the source files

* Fix lint

* Replace hix-sized header serialisation with rlp (to support clique)

* Remove anchor records from the files

* Fixeds for DB recovery

* Fix compilation

* Fix compile errors

* Fix formatting

* Fix lint

* Fix comments

* Remove headerLoop

* Properly terminate body download

* Support for StatusData p2p proto

* Fix forkid test

* Fix test

* Fix lint

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

Update snappy to prevent crash on Apple M1

* mdbx_increase_reclaim_limit

* readable

* Remove hashed changesets

* try this

* oops

* simplify

* better diagnostics

* don't hash account key and use bitmap 64 to check history index

* update docs of bucket

Co-authored-by: alex.sharov <AskAlexSharov@gmail.com>