* Pruning headers p2p basic structure
* Remove headers-first
* Fix consensus tests except TestValidateAndInsertPruningPointWithSideBlocks and TestValidateAndInsertImportedPruningPoint
* Add virtual genesis
* Implement PruningPointAndItsAnticoneWithMetaData
* Start fixing TestValidateAndInsertImportedPruningPoint
* Fix TestValidateAndInsertImportedPruningPoint
* Fix BlockWindow
* Update p2p and gRPC
* Fix all tests except TestHandleRelayInvs
* Delete TestHandleRelayInvs parts that cover the old IBD flow
* Fix lint errors
* Add p2p_request_ibd_blocks.go
* Clean code
* Make MsgBlockWithMetaData implement its own representation
* Remove redundant check if highest share block is below the pruning point
* Fix TestCheckLockTimeVerifyConditionedByAbsoluteTimeWithWrongLockTime
* Fix comments, errors ane names
* Fix window size to the real value
* Check reindex root after each block at TestUpdateReindexRoot
* Remove irrelevant check
* Renames and comments
* Remove redundant argument from sendGetBlockLocator
* Don't delete staging on non-recoverable errors
* Renames and comments
* Remove redundant code
* Commit changes inside ResolveVirtual
* Add comment to IsRecoverableError
* Remove blocksWithMetaDataGHOSTDAGDataStore
* Increase windows pagefile
* Move DeleteStagingConsensus outside of defer
* Get rid of mustAccepted in receiveBlockWithMetaData
* Ban on invalid pruning point
* Rename interface_datastructures_daawindowstore.go to interface_datastructures_blocks_with_meta_data_daa_window_store.go
* * Change GetVirtualSelectedParentChainFromBlockResponseMessage and VirtualSelectedParentChainChangedNotificationMessage to show only added block hashes
* Remove ResolveVirtual
* Use externalapi.ConsensusWrapper inside MiningManager
* Fix pruningmanager.blockwithmetadata
* Set pruning point selected child when importing the pruning point UTXO set
* Change virtual genesis hash
* replace the selected parent with virtual genesis on removePrunedBlocksFromGHOSTDAGData
* Get rid of low hash in block locators
* Remove +1 from everywhere we use difficultyAdjustmentWindowSize and increase the default value by one
* Add comments about consensus wrapper
* Don't use separate staging area when resolving resolveBlockStatus
* Fix netsync stability test
* Fix checkResolveVirtual
* Rename ConsensusWrapper->ConsensusReference
* Get rid of blockHeapNode
* Add comment to defaultDifficultyAdjustmentWindowSize
* Add SelectedChild to DAGTraversalManager
* Remove redundant copy
* Rename blockWindowHeap->calculateBlockWindowHeap
* Move isVirtualGenesisOnlyParent to utils
* Change BlockWithMetaData->BlockWithTrustedData
* Get rid of maxReasonLength
* Split IBD to 100 blocks each time
* Fix a bug in calculateBlockWindowHeap
* Switch to trusted data when encountering virtual genesis in blockWithTrustedData
* Move ConsensusReference to domain
* Update ConsensusReference comment
* Add comment
* Rename shouldNotAddGenesis->skipAddingGenesis
* Replaced the content of MsgIBDRootUTXOSetChunk with pairs of outpoint-utxo entry pairs.
* Rename utxoIter to utxoIterator.
* Add a big stinky TODO on an assert.
* Replace pruningStore staging with a UTXO set iterator.
* Reimplement receiveAndInsertIBDRootUTXOSet.
* Extract OutpointAndUTXOEntryPairsToDomainOutpointAndUTXOEntryPairs into domainconverters.go.
* Pass the outpoint and utxy entry pairs to the pruning store.
* Implement InsertCandidatePruningPointUTXOs.
* Implement ClearCandidatePruningPointUTXOs.
* Implement UpdateCandidatePruningPointMultiset.
* Use the candidate pruning point multiset in updatePruningPoint.
* Implement CandidatePruningPointUTXOIterator.
* Use the pruning point utxo set iterator for StageVirtualUTXOSet.
* Defer ClearCandidatePruningPointUTXOs.
* Implement OverwriteVirtualUTXOSet.
* Implement CommitCandidatePruningPointUTXOSet.
* Implement BeginOverwritingVirtualUTXOSet and FinishOverwritingVirtualUTXOSet.
* Implement overwriteVirtualUTXOSetAndCommitPruningPointUTXOSet.
* Rename ClearCandidatePruningPointUTXOs to ClearCandidatePruningPointData.
* Add missing methods to dbManager.
* Implement PruningPointUTXOs.
* Implement RecoverUTXOIfRequired.
* Delete the utxoserialization package.
* Fix compilation errors in TestValidateAndInsertPruningPoint.
* Switch order of operations in the if statements in PruningPointUTXOs so that Next() wouldn't be unnecessarily called.
* Fix missing pruning point utxo set staging and bad slice length.
* Fix no default multiset in InsertCandidatePruningPointUTXOs.
* Make go vet happy.
* Rename candidateXXX to importedXXX.
* Do some more renaming.
* Rename some more.
* Fix bad MsgIBDRootNotFound logic.
* Fix an error message.
* Simplify receiveIBDRootBlock.
* Fix error message in receiveAndInsertIBDRootUTXOSet.
* Do some more renaming.
* Fix merge errors.
* Fix a bug caused by calling iterator.First() unnecessarily.
* Remove databaseContext from stores and don't use a transaction in ClearXXX functions.
* Simplify receiveAndInsertIBDRootUTXOSet.
* Fix offset count in PruningPointUTXOs().
* Fix readOnlyUTXOIteratorWithDiff.First().
* Split handleRequestIBDRootUTXOSetAndBlockFlow into smaller methods.
* Rename IbdRootNotFound to UnexpectedPruningPoint.
* Rename requestIBDRootHash to requestPruningPointHash.
* Rename IBDRootHash to PruningPointHash.
* Rename RequestIBDRootUTXOSetAndBlock to RequestPruningPointUTXOSetAndBlock.
* Rename IBDRootUTXOSetChunk to PruningPointUTXOSetChunk.
* Rename RequestNextIBDRootUTXOSetChunk to RequestNextPruningPointUTXOSetChunk.
* Rename DoneIBDRootUTXOSetChunks to DonePruningPointUTXOSetChunks.
* Rename remaining references to IBD root.
* Fix an error message.
* Add a check for HadStartedImportingPruningPointUTXOSet in commitVirtualUTXODiff.
* Add a check for HadStartedImportingPruningPointUTXOSet in ImportPruningPointUTXOSetIntoVirtualUTXOSet.
* Move FinishImportingPruningPointUTXOSet closer to HadStartedImportingPruningPointUTXOSet.
* Remove reference to pruningStore in utxoSetIterator.
* Pointerify utxoSetIterator receivers.
* Fix bad insert in CommitImportedPruningPointUTXOSet.
* Rename commitImportedPruningPointUTXOSetAll to applyImportedPruningPointUTXOSet.
* Simplify PruningPointUTXOs.
* Add populateTransactionWithUTXOEntriesFromUTXOSet.
* Fix a TODO comment.
* Rename InsertImportedPruningPointUTXOs to AppendImportedPruningPointUTXOs.
* Extract handleRequestPruningPointUTXOSetAndBlockMessage to a separate method.
* Rename stuff in readOnlyUTXOIteratorWithDiff.First().
* Address toAddIterator in readOnlyUTXOIteratorWithDiff.First().
* Call First() before any full iteration on ReadOnlyUTXOSetIterator.
* Call First() before any full iteration on a database Cursor.
* Put StartImportingPruningPointUTXOSet inside the pruning point transaction.
* Make serializeOutpoint and serializeUTXOEntry free functions in pruningStore.
* Fix readOnlyUTXOIteratorWithDiff.First().
* Fix bad validations in importPruningPoint.
* Remove superfluous call to validateBlockTransactionsAgainstPastUTXO.
