* [NOD-641] Upgrade to github.com/pkg/errors v0.9.1 and use errors.As where needed
* [NOD-641] Fix find and replace error
* [NOD-641] Use errors.As for error type checking
* [NOD-641] Fix errors.As for pointer types
* [NOD-641] Use errors.As where needed
* [NOD-641] Rename rErr->ruleErr
* [NOD-641] Rename derr->dbErr
* [NOD-641] e->flagsErr where necessary
* [NOD-641] change jerr to more appropriate name
* [NOD-641] Rename cerr->bdRuleErr
* [NOD-641] Rename serr->scriptErr
* [NOD-641] Use errors.Is instead of testutil.AreErrorsEqual in TestNewHashFromStr
* [NOD-641] Rename bdRuleErr->dagRuleErr
* [NOD-641] Rename mErr->msgErr
* [NOD-641] Rename dErr->deserializeErr
* [NOD-616] Remove unused methods from BlockDAG.
* [NOD-616] Remove Height from GetRawMempoolVerboseResult and TxDesc.
* [NOD-616] Replaced BlockDAG.ChainHeight with SelectedTipBlueScore.
* [NOD-616] Remove the unused BlockChainHeightByHash.
* [NOD-616] Remove the unused blockChainHeight from checkBlockHeaderContext.
* [NOD-616] Remove chainHeight from util.Block.
* [NOD-616] Remove TestChainHeight.
* [NOD-616] Update unknown rule activation warning to use blueScore.
* [NOD-616] Update thresholdState to use blueScore instead of chainHeight.
* [NOD-616] Update blockLocator to use blueScore instead of chainHeight.
* [NOD-616] Remove blockNode.chainHeight.
* [NOD-616] Fix comments and variable names.
* [NOD-616] Replace a weird for loop with a while loop.
* [NOD-616] Fix a comment.
* [NOD-616] Remove pre-allocation in blockLocator.
* [NOD-616] Coalesce checks that startHash and stopHash are not the same into the same condition.
* [NOD-616] Fix a comment.
* [NOD-616] Remove weird blueScore logic around childHashStrings.
* [NOD-616] Fix hash pointer comparison.
* [NOD-616] Fix a comment.
* [NOD-616] Add ban score to peers misusing GetBlockLocator.
* [NOD-616] Replace adding ban score with disconnecting.
* [NOD-616] Add blueScore to FilteredBlockAddedNtfn.
* [NOD-540] Implement reachability (#545)
* [NOD-540] Begin implementing reachability.
* [NOD-540] Finish implementing reachability.
* [NOD-540] Implement TestIsFutureBlock.
* [NOD-540] Implement TestInsertFutureBlock.
* [NOD-540] Add comments.
* [NOD-540] Add comment for interval in blockNode.
* [NOD-540] Updated comments over insertFutureBlock and isFutureBlock.
* [NOD-540] Implement interval splitting methods.
* [NOD-540] Begin implementing tree manipulation in blockNode.
* [NOD-540] Implement countSubtreesUp.
* [NOD-540] Add a comment explaining an impossible condition.
* [NOD-540] Implement applyIntervalDown.
* [NOD-540] Moved the reachability tree stuff into reachability.go.
* [NOD-540] Add some comments.
* [NOD-540] Add more comments, implement isInPast.
* [NOD-540] Fix comments.
* [NOD-540] Implement TestSplitFraction.
* [NOD-540] Implement TestSplitExact.
* [NOD-540] Implement TestSplit.
* [NOD-540] Add comments to structs.
* [NOD-540] Implement TestAddTreeChild.
* [NOD-540] Fix a comment.
* [NOD-540] Rename isInPast to isAncestorOf.
* [NOD-540] Rename futureBlocks to futureCoveringSet.
* [NOD-540] Rename isFutureBlock to isInFuture.
* [NOD-540] move reachabilityInterval to the top of reachability.go.
* [NOD-540] Change "s.t." to "such that" in a comment.
* [NOD-540] Fix indentation.
* [NOD-540] Fix a potential bug involving float inaccuracy.
* [NOD-540] Wrote a more descriptive error message.
* [NOD-540] Fix error messsage.
* [NOD-540] Fix the recursive countSubtreesUp.
* [NOD-540] Rename countSubtreesUp to countSubtrees and applyIntervalDown to propagateInterval.
* [NOD-540] Implement updating reachability for a valid new block.
* [NOD-540] Implement a disk storage for reachability data.
* [NOD-540] Fix not all tree nodes being written to the database.
* [NOD-540] Implement serialization for reachabilityData.
* [NOD-540] Implement some deserialization for reachabilityData.
* [NOD-540] Implement restoring the reachabilityStore on node restart.
* [NOD-540] Made interval and remainingInterval pointers.
* [NOD-540] Rename setTreeInterval to setInterval.
* [NOD-540] Rename reindexTreeIntervals to reindexIntervals and fixed the comment above it.
* [NOD-540] Expand the comment above reindexIntervals.
* [NOD-540] Fix comment above countSubtrees.
* [NOD-540] Fix comment above countSubtrees some more.
* [NOD-540] Fix comment above split.
* [NOD-540] Fix comment above isAncestorOf.
* [NOD-540] Fix comment above reachabilityTreeNode.
* [NOD-540] Fix weird condition in addTreeChild.
* [NOD-540] Rename addTreeChild to addChild.
* [NOD-540] Fix weird condition in splitFraction.
* [NOD-540] Reverse the lines in reachabilityTreeNode.String().
* [NOD-540] Renamed f to fraction and x to size.
* [NOD-540] Fix comment above bisect.
* [NOD-540] Implement rtn.isAncestorOf().
* [NOD-540] Use treeNode isAncestorOf instead of treeInterval isAncestorOf.
* [NOD-540] Use newReachabilityInterval instead of struct initialization.
* [NOD-540] Make reachabilityTreeNode.String() use strings.Join.
* [NOD-540] Use sync.RWMutex instead of locks.PriorityMutex.
* [NOD-540] Rename thisTreeNode to newTreeNode.
* [NOD-540] Rename setTreeNode to addTreeNode.
* [NOD-540] Extracted selectedParentAnticone to a separate function.
* [NOD-540] Rename node to this.
* [NOD-540] Move updateReachability and isAncestorOf from dag.go to reachability.go.
* [NOD-540] Add whitespace after multiline function signatures in reachability.go.
* [NOD-540] Make splitFraction return an error on empty interval.
* [NOD-540] Add a comment about rounding to splitFraction.
* [NOD-540] Replace sneaky tabs with spaces.
* [NOD-540] Rename split to splitExponential.
* [NOD-540] Extract exponentialFractions to a separate function.
* [NOD-540] Rename bisect to findIndex.
* [NOD-540] Add call to reachabilityStore.clearDirtyEntries at the end of saveChangesFromBlock.
* [NOD-540] Explain the dirty hack in reachabilityStore.init().
* [NOD-540] Split the function signature for deserializeReachabilityData to two lines.
* [NOD-540] Add a comment about float precision loss to exponentialFractions.
* [NOD-540] Corrected a comment about float precision loss to exponentialFractions.
* [NOD-540] Fixed a comment about float precision loss to exponentialFractions some more.
* [NOD-540] Added further comments above futureCoveringBlockSet.
* [NOD-540] Rename addTreeNode to setTreeNode.
* [NOD-540] Rename splitExponential to splitWithExponentialBias.
* [NOD-540] Fix object references in reachabilityData deserialization (#563)
* [NOD-540] Fix broken references in deserialization.
* [NOD-540] Fix broken references in futureCoveringSet deserialization. Also add comments.
* [NOD-540] Don't deserialize on the first pass in reachabilityStore.init().
* [NOD-540] Remove redundant assignment to loaded[hash].
* [NOD-540] Use NewHash instead of SetBytes. Rename data to destination.
* [NOD-540] Preallocate futureCoveringSet.
* [NOD-541] Implement GHOSTDAG (#560)
* [NOD-541] Implement GHOSTDAG
* [NOD-541] Replace the old PHANTOM variant with GHOSTDAG
* [NOD-541] Move dag.updateReachability to the top of dag.applyDAGChanges to update reachability before the virtual block is updated
* [NOD-541] Fix blueAnticoneSize
* [NOD-541] Initialize node.bluesAnticoneSizes
* [NOD-541] Fix pastUTXO and applyBlueBlocks blues order
* [NOD-541] Add serialization logic to node.bluesAnticoneSizes
* [NOD-541] Fix GHOSTDAG to not count the new block and the blue candidates anticone, add selected parent to blues, and save to node.bluesAnticoneSizes properly
* [NOD-541] Fix test names in inner strings
* [NOD-541] Writing TestGHOSTDAG
* [NOD-541] In blueAnticoneSize change node->current
* [NOD-541] name ghostdag return values
* [NOD-541] fix ghostdag to return slice
* [NOD-541] Split k-cluster violation rules
* [NOD-541] Add missing space
* [NOD-541] Add comment to ghostdag
* [NOD-541] In selectedParentAnticone rename past->selectedParentPast
* [NOD-541] Fix misrefernces to TestChainUpdates
* [NOD-541] Fix ghostdag comment
* [NOD-541] Make PrepareBlockForTest in blockdag package
* [NOD-541] Make PrepareBlockForTest in blockdag package
* [NOD-541] Assign to selectedParentAnticone[i] instead of appending
* [NOD-541] Remove redundant forceTransactions arguments from PrepareBlockForTEST
* [NOD-541] Add non-selected parents to anticoneHeap
* [NOD-541] add test for ghostdag
* [NOD-541] Add comments
* [NOD-541] Use adjusted time for initializing blockNode
* [NOD-541] Rename isAncestorOf -> isAncestorOfBlueCandidate
* [NOD-541] Remove params from PrepareBlockForTest
* [NOD-541] Fix TestChainHeight
* [NOD-541] Remove recursive lock
* [NOD-541] Fix TestTxIndexConnectBlock
* [NOD-541] Fix TestBlueBlockWindow
* [NOD-541] Put prepareAndProcessBlock in common_test.go
* [NOD-541] Fix TestConfirmations
* [NOD-541] Fix TestAcceptingBlock
* [NOD-541] Fix TestDifficulty
* [NOD-541] Fix TestVirtualBlock
* [NOD-541] Fix TestSelectedPath
* [NOD-541] Fix TestChainUpdates
* [NOD-541] Shorten TestDifficulty test time
* [NOD-541] Make PrepareBlockForTest use minimal valid block time
* [NOD-541] Remove TODO comment
* [NOD-541] Move blockdag related mining functions to mining.go
* [NOD-541] Use NextBlockCoinbaseTransaction instead of NextBlockCoinbaseTransactionNoLock in NextCoinbaseFromAddress
* [NOD-541] Remove useMinimalTime from BlockForMining
* [NOD-541] Make MedianAdjustedTime a *BlockDAG method
* [NOD-541] Fix ghostdag to use anticone slice instead of heap
* [NOD-541] Fix NewBlockTemplate locks
* [NOD-541] Fix ghostdag comments
* [NOD-541] Convert MedianAdjustedTime to NextBlockTime
* [NOD-541] Fix ghostdag comment
* [NOD-541] Fix TestGHOSTDAG comment
* [NOD-541] Add comment before sanity check
* [NOD-541] Explicitly initialize .blues in ghostdag
* [NOD-541] Rename *blockNode.lessThan to *blockNode.less
* [NOD-541] Remove redundant check if block != chainBlock
* [NOD-541] Fix comment
* [NOD-541] Fix comment
* [NOD-497] Add comment; General refactoring
* [NOD-497] General refactoring.
* [NOD-497] Use isAncestor of the tree rather than the node
* [NOD-497] Remove reachability mutex lock as it is redundant (dag lock is held so no need); General refactoring.
* [NOD-497] Update comment
* [NOD-497] Undo test blocktimestamp
* [NOD-497] Update comments; Use BlockNode.less for blockset;
* [NOD-497] Change processBlock to return boolean and not the delay duration (merge conflict)
* [NOD-497] Undo change for bluest to use less; Change blocknode less to use daghash.Less
Co-authored-by: stasatdaglabs <39559713+stasatdaglabs@users.noreply.github.com>
Co-authored-by: Dan Aharoni <dereeno@protonmail.com>
* [NOD-300] If node has invalid ancestor set the according status in blockindex
* [NOD-300] Test that status is also updated for grand child of an invalid block
* [NOD-300] change make(blockSet) to newSet()
* [NOD-292] In accept.go, made dbStoreBlock and flushToDB occur within the same transaction.
* [NOD-292] Implemented processing blocks that were not validated on BTCD start.
* [NOD-292] Fixed processing logic on init. Added a test for it.
* [NOD-292] Fixed some comments.
* [NOD-292] Made unlocks deferred in a couple of places.
* [NOD-292] Made unprocessed block reprocess via ProcessBlock rather than maybeAcceptBlock.
* [NOD-292] Fixed grammar in comment. Added an explanation to TestAcceptingInInit.
* [NOD-292] Split flushToDB into two versions.
* [NOD-292] Fixed a bad assignment.
* [NOD-292] Fixed bad spacing.
* [NOD-270] Added notifyChainChanges and related commands.
* [NOD-270] Added NTChainChanged to blockdag.
* [NOD-270] Implemented collection and sending of ChainChanged notifications.
* [NOD-270] Fixed an improperly named test.
* [NOD-270] Added a test: TestChainChangedNotification.
* [NOD-270] Fixed a couple copy+paste errors.
* [NOD-270] Added a couple of comments for TestChainChangedNotification.
* [NOD-270] Fixed formatting error.
* [NOD-270] Fixed a comment.
* [NOD-270] Uncoupled chain updates inside blockdag from the concept of a notification.
* [NOD-270] Removed intermediary ChainUpdates object from ChainChangedNotificationData.
* [NOD-208] Added blockBlueScore to UTXOEntry.
* [NOD-208] Added blueBlockScore to NewUTXOEntry.
* [NOD-208] Fixed compilation errors in policy, utxoset, and dag tests.
* [NOD-208] Changed validateBlockRewardMaturity and CheckTransactionInputsAndCalulateFee to use blueScore.
* [NOD-208] Changed CalcBlockSubsidy to use blueScore.
* [NOD-208] Changed SequenceLockActive to use blueScore.
* [NOD-208] Removed ExtractCoinbaseHeight.
* [NOD-208] Removed reference to block height in ensureNoDuplicateTx.
* [NOD-208] Changed IsFinalizedTransaction to use blueScore.
* [NOD-208] Fixed merge errors.
* [NOD-208] Made UTXOEntry serialization use blueScore.
* [NOD-208] Changed CalcPriority and calcInputValueAge to use blueScore.
* [NOD-208] Changed calcSequenceLock to use blueScore.
* [NOD-208] Removed blockChainHeight from UTXOEntry.
* [NOD-208] Fixed compilation errors in feeEstimator. Fixed a bug in the test pool hardness.
* [NOD-208] Fixed oldestChainBlockWithBlueScoreGreaterThan not handling an extreme case.
* [NOD-208] Fixed TestDiffFromTx.
* [NOD-208] Got rid of priority and support of free transactions.
* [NOD-208] Fixed TestProcessTransaction.
* [NOD-208] Fixed TestTxFeePrioHeap.
* [NOD-208] Fixed TestAddrIndex and TestFeeEstimatorCfg.
* [NOD-208] Removed unused rateLimit parameter from ProcessTransaction.
* [NOD-208] Fixed tests that rely on CreateTxChain.
* [NOD-208] Fixed tests that rely on CreateSignedTxForSubnetwork.
* [NOD-208] Fixed TestFetchTransaction.
* [NOD-208] Fixed TestHandleNewBlock. Fixed HandleNewBlock erroneously processing fee transactions.
* [NOD-208] Fixed TestTxIndexConnectBlock.
* [NOD-208] Removed the use of Height() from the fee estimator.
* [NOD-208] Removed unused methods from rpcwebsocket.go.
* [NOD-208] Removed Height from util.Block.
* [NOD-208] Removed ErrForkTooOld. It doesn't make sense in a DAG.
* [NOD-208] Made blockHeap use blueScore instead of height.
* [NOD-208] Removed fee estimator.
* [NOD-208] Removed DAG.Height.
* [NOD-208] Made TestAncestorErrors test chainHeight instead of height.
* [NOD-208] Fixed a couple of comments that were still speaking about block height.
* [NOD-208] Replaced all uses of HighestTipHash with SelectedTipHash.
* [NOD-208] Remove blockNode highest and some remaining erroneous uses of height.
* [NOD-208] Fixed a couple of comments. Fixed outPoint -> outpoint merge error.
* [NOD-208] Fixed a couple more comments.
* [NOD-208] Used calcMinRequiredTxRelayFee instead of DefaultMinRelayTxFee for mempool tests.
* [NOD-208] Renamed mempool Config BestHeight to DAGChainHeight.
* [NOD-208] Fixed a bug in oldestChainBlockWithBlueScoreGreaterThan. Made calcSequenceLock use the node's selected parent chain rather than the virtual block's.
* [NOD-208] Removed chainHeight from blockNode String().
Renamed checkpointsByHeight to checkpointsByChainHeight and prevCheckpointHeight to prevCheckpointChainHeight.
Removed reference to chainHeight in blockIndexKey.
Fixed comments in dagio.go.
* [NOD-208] Removed indexers/blocklogger.go, as no one was using it.
* [NOD-208] Made blocklogger.go log blueScore instead of height.
* [NOD-208] Fixed typo.
* [NOD-208] Fixed comments, did minor renaming.
* [NOD-208] Made a "common sense" wrapper around sort.Search.
* [NOD-208] Fixed comment in SearchSlice.
* [NOD-175] Added BlockAddedNotificationData and sent it instead of just a block on BlockAdded.
* [NOD-175] Added BFWasUnorphaned and raised it when an unorphaned block was to be accepted.
* [NOD-175] Fixed a typo.
* [NOD-175] Made it so that only the mempool gets updated if we're not current or the block was just now unorphaned.
* [NOD-142] Updated util.FastLog2Floor to work on uint64
* [NOD-142] Convert height and chainHeight to uint64
* [NOD-142] A couple fixes in comments of TestFastLog2Floor
* [NOD-142] Make spendableOutOffset uint64 too
* [NOD-83] Modify block parents' children only after validation
* [NOD-83] Creating CheckConnectBlockTemplateWithLock with RLock
* [NOD-83] Put updateParentsChildren inside updateParents
* [NOD-83] create updateParentsDiffs function
* [NOD-63] Merge BlockAccepted and BlockConnected notifications into BlockAdded + remove BlockDisconnected notifications
* [NOD-63] Many instances of chain->DAG and similar
* [NOD-63] Some more chian -> DAG
* [NOD-42] Split checkFinalityRules and newFinalityPoint
* [NOD-42] Rename connectToDAG -> addBlock + move anything that is not actually connecting block to DAG out of connectBlock
* [NOD-42] Extract methods from PastUTXO
* [NOD-42] Give names to outputs in verifyAndBuildUTXO and propagate name
changes up the call tree
* [NOD-42] Split loop that creates UTXODiff and updates acceptance data into 2 separate methods
* [NOD-42] Removed from applyUTXOChanges any validation logic, moved in any logic related to updating the DAG and renamed to applyDAGChanges
* [NOD-42] Rename: CheckTransactionInputs -> CheckTransactionInputsAndCalculateFee
* [NOD-42] Revise some comments
* [NOD-42] Removed finalityErr constant - it's not needed
* Multiple chain -> dag corrections in comments
* [NOD-42] Removed redundant declaration of feeData
* [NOD-42] Reworded some comments
* [NOD-42] Rename MultiblockTxsAcceptanceData -> MultiBlockTxsAcceptanceData
* [DEV-379] Refactored checkBlockContext: Mainly extracted methods and re-organized variable use to minimize clutter
* [DEV-379] Simplify the condition according to which we increment blockCount
* [DEV-379] Move all logic to save new block data to separate method
* [DEV-379] Refactored the checking of finality point
* [DEV-379] Minor styling changes
* [DEV-379] Extracted method in applyUTXOChanges subroutines
* [NOD-41] Moved update of finality point to after block was validated + some minor style fixes
* [NOD-41] call dag.checkFinalityRulesAndGetFinalityPoint(node) even if fastAdd
* [NOD-41] Fix in a comment
* [NOD-41] Some methods of dag that could have been just functions converted to function
* [DEV-259] Allow to spend genesis coinbase, and use ProcessBlock to add genesis to the DAG like any other block
* [DEV-259] fix IsCurrent to check genesis timestamp if needed
* [DEV-259] add genesisPastUTXO as separate function
* [DEV-338] Remove provisional nodes, and panic in case there's an error after verifying the block is valid
* [DEV-338] Improved deffered blockNode cleanup and cosmetic changes
* [DEV-338] Fixed dag.index.SetStatusFlags for parents + cosmetic changes
* [DEV-338] Fixed build
* [DEV-338] Fixed comments
* [DEV-105] use utxodiff in mempool instead of utxoview
* [DEV-105] get rid of utxoview
* [DEV-105] fix tests to use utxoset
* [DEV-105] remove utxoview type
* [DEV-105] move DagSetup to test_utils.go
* [DEV-105] add comments and add blockdag/test_utils_test.go
* [DEV-105] add restoreInputs arg to removeTransaction
* [DEV-105] give more descriptive names to vars
* [DEV-115] close txChan outside of HandleNewBlock
* [DEV-105] rename DagSetup -> DAGSetup
* [DEV-107] Disallow situation where a parent is also an ancestor of another parent
* [DEV-107] Add comment for validateParents
* [DEV-107] move validateParents to checkBlockContext
* [DEV-107] break validateParents error to 2 lines
* [DEV-107] remove TestProcessBlock
* [DEV-107] fix comment that explains block 3c test
* [DEV-107] remove blk_3C from TestCheckConnectBlockTemplate
* [DEV-97] Moved github.com/daglabs/btcutil into github.com/daglabs/btcd/btcutil.
* [DEV-97] Updated Gopkg.toml to no longer refer to btcutil.
* [DEV-97] Renamed btcutil to util.
* [DEV-74] Implemented and written tests for utxoIterator.
* [DEV-74] Improved utxoIterator tests.
* [DEV-74] Implemented utxoCollection tests.
* [DEV-74] Implemented utxoDiff and its tests.
* [DEV-74] Implemented utxoSet.
* [DEV -74] Added tests for fullUTXOSet.
* [DEV-74] Added some tests for diffUTXOSet.
* [DEV-74] Wrote tests for diffUTXOSet iterator.
* [DEV-74] Added a negative test for diffUTXOSet.withDiff.
* [DEV-74] Wrote tests for addTx.
* [DEV-74] Wrote a toRemove test for addTx.
* [DEV-74] Changed blockNode.utxoDiff to be of type utxoDiff.
* [DEV-74] Removed superfluous whitespace.
* [DEV-74] Renamed confusing "previousHash" to "hash".
* [DEV-74] Fixed bad test and corrected failing test.
* [DEV-74] Moved confusing "negatives" test to be part of the general utxoCollection test.
* [DEV-74] Removed utxoDiff.inverted.
* [DEV-74] Renamed blockNode.utxoDiff to blockNode.diff.
* [DEV-74] Renamed diff to diffFrom for clarity's sake.
* [DEV-74] Converted the type of utxoCollection from map[daghash.Hash]map[uint32]*wire.TxOut to map[wire.OutPoint]*UtxoEntry.
* [DEV-74] Corrected test names in utxoCollection_test.
* [DEV-74] Removed superfluous utxoCollection iterator and moved utxoIterator into utxoset.go.
* [DEV-74] Renamed variables in utxoset.go.
* [DEV-74] Renamed verifyTx to areInputsInUTXO and removed a superfulous test.
* [DEV-74] Fixed bad test logic in TestDiffUTXOSet_addTx.
* [DEV-74] Added a few comments. Added reference-equals checks to clone functions.
* [DEV-74] Moved utxoCollection and utxoDiff into utxoset.go.
* [DEV-74] Wrote explanations for utxoCollection and utxoDiff tests.
* [DEV-74] Wrote explanations for all utxoSet tests besides addTx.
* [DEV-74] Wrote explanations for TestDiffUTXOSet_addTx.
* [DEV-74] Moved the documentation for utxoDiff into utxoset.go.
* [DEV-74] Wrote an explanation on utxoSet.
* [DEV-75] Found a typo.
* [DEV-75] Renamed dag -> virtual, dagView -> virtualBlock.
* [DEV-75] Renamed newDAGView to newVirtualBlock.
* [DEV-75] Moved queries for the genesis block from virtualBlock to BlockDAG.
* [DEV-75] Got rid of chainView height and findFork.
* [DEV-75] Renamed receivers from c to v.
* [DEV-75] Updated initBlockNode to allow for virtual (headerless) nodes, updated dbDAGState to contain multiple tip hashes, implemented virtualBlock.setTips.
* [DEV-75] Got rid of virtualBlock.equals, which was not used anywhere.
* [DEV-75] Got rid of virtualBlock.tip().
* [DEV-75] Got rid of SetTip everywhere except for tests.
* [DEV-75] Got rid of Next().
* [DEV-75] Got rid of Contains().
* [DEV-75] Got rid of HeightRange(), as no one was using it.
* [DEV-75] Made verifyDAG in rpcserver.go not use block height for iteration.
* [DEV-75] Got rid of the part of Manager.Init() that handled "catching up" for side chains, which allowed me to get rid of BlockDAG.BlockByHeight().
* [DEV-75] Dropped support for the RPC command getblockhash since it was getting blocks by their height.
* [DEV-75] Dropped getnetworkhashps since it was reliant on height, fixed another couple of RPC commands to return nextHashes instead of a nextHash, and got rid of nodeByHeight in virtualBlock.
* [DEV-75] Got rid of setTip().
* [DEV-75] Moved blockLocator() out of virtualBlock and into BlockDAG. Also removed TestLocateInventory().
* [DEV-75] Implemented addTip().
* [DEV-75] Cleaned up virtualblock.go a bit.
* [DEV-75] Erased irrelevant tests in virtualblock_test.go. Moved dag-related tests into dag_test.go.
* [DEV-75] Removed unnecessary nil check.
* [DEV-75] Wrote tests for virtualBlock.
* [DEV-75] Fixed bad test, added explanations to tests.
* [DEV-89] Fixed a comment.
* [DEV-89] Fixed another comment.
* [DEV-89] Removed the section in Manager::Init that handled rolling back indexes to the main chain if their tip is an orphaned fork. This could only happen during reorg, which no longer exists. Also removed BlockDAG::MainChainHasBlock, which was no longer used by anyone.
* [DEV-89] Removed the nil check inside initBlockNode() and amended the one place that called it with nil.
* [DEV-89] Renamed the receiver param for BlockDAG from b to dag.
* [DEV-89] Moved fastLog2Floor from dag.go to btcutil/btcmath.go.
* [DEV-89] Renamed tstTip to testTip.
* [DEV-89] Renamed phanom_test.go to phantom_test.go.
* [DEV-89] Fixed comments, renamed mainChainHeight to dagHeight.
* [DEV-89] Rewrote virtualBlock.addTip().
* [DEV-89] Fixed a comment. (chain -> DAG)
* [DEV-89] Fixed another chain -> DAG comment.
* [DEV-62] add phantom constructs to blocknode
* [DEV-62] add phantom constructs to blocknode
* [DEV-72] write blues()
* [DEV-72] write blues()
* [DEV-72] write blues()
* [DEV-62] add comments to new phantom constructs in blocknode
* Fixed dbIndexConnectBlock. (#33)
* Fixed dbIndexConnectBlock.
* Removed redundant check in storeFilter.
* Created a new method to BlockHeader: IsGenesis.
* [DEV-71] Implement BlockHeap (#35)
* [DEV-71] Implemented BlockHeap.
* [DEV-71] Removed irrelevant comment.
* [DEV-71] Renamed variables in Pop() and split Less() to multiple lines.
* [DEV-72] write blues()
* [DEV-72] write blues()
* [DEV-72] write blues()
* [DEV-72] write blues tests
* [DEV-72] write blues tests
* [DEV-72] remove relevant past
* [DEV-72] write blues tests
* [DEV-72] write blues tests
* [DEV-72] write blues tests
* [DEV-72] write functions to order blockSet by hash and write blue tests
* [DEV-72] add secret mining and censorship attack tests
* [DEV-72] remove prints
* [DEV-72] remove K from dagconfig.Params
* [DEV-72] remove K from dagconfig.Params
* [DEV-72] change blueScore to uint64
* [DEV-72] block V was missing, so renamed w -> v, x -> w etc
* [DEV-72] use node.String instead of %v
* [DEV-72] block V was missing, so renamed w -> v, x -> w etc
* [DEV-72] add K to dagconfig.Params, and add expected reds to all phantom tests
* [DEV-72] set K=10 and add comments to phantom and phantom tests
* [DEV-72] fix formatting and add comments to TestPhantom
* [DEV-72] fix grammar
