astar_dart

• replace Point from dart.math to records

• improve heuristic function
  • fix reconstruct() in findPath
  • using SplayTreeMap instead sort
  • start point is always return as first element in path

• added findStepsTargets()
  • added reconstructNormalized() to find path for findPath()
  • added reconstruct() to find path for targets and steps
  • fix some bug in findTargets()
  • improve example/main.dart
  • for complex search recommend use findStepsTargets() with reconstruct()

• added findStepsTargets()
  • fix some bug in findTargets()
  • improve example/main.dart

• fixed some bugs findSteps

• new version is really fast ,
  • findPath() 80% performance improvement
  • findSteps() , findTargets() , more a lot of performance improvement
  • findTarget() all target detected as not movable , while search them

• chore update dependencies

• added option resetBarrier to resetNodes()

• added setBarrier() , setPoint() to AstarGrid

• bugfix AStarHex _isNeighbors incorrect check

• added reset() for ANode , clear h ,g , parent value , improve performance
  • added resetNodes() to reset Grid, improve performance

• fix degradation on euclidean algorithm

• extract Array2d as package
  • update hex example

• remove BarrierPoint
  • added hex example

• improve performance
  • added hex example

• make it faster
  • added gridBuilder

• improve example
  • Array2D added valueBuilder

• separate by manhattan , euclidean , hex

added support for hex tiles