* Add Close() function to all the iterators
* Add defer iterator.Close() whenever we open an iterator
* Add isClosed to all iterators and panic/return error if used after closing
Co-authored-by: Svarog <feanorr@gmail.com>
* Make antiPastHashesBetween return blocks sorted in ghostdag-order
* Return sortedMergeSet instead of blueMergeSet
* Invert the order of parameters of IsAncestorOf
* Add RenderDAGToDot to TestConsensus
* Add HighHash explicitly, unless lowHash == highHash
* Use Equal instead of == when comparing hashes
* Fixed TestSyncManager_GetHashesBetween
* Fix tests
* findHighHashAccordingToMaxBlueScoreDifference: don't start looking if the whole thing fits
* Handle a missed error
* Remove redundant call to RenderToDot
* Fix bug in findHighHashAccordingToMaxBlueScoreDifference
