Removing sizeState and legacy code in for-generation-optimized InplaceIndexNode.
Removing cached value arity to enable further space savings.
Enabling thread lock again.
Decision to go with representation where only nodes with arity <= 4 are specialized.
Cleaning up code.
Separating size() and sizePredicate(); reordering comparisons in equals() for faster fail-fast behavior.
Switching to fixed stack iterator.
Adding more specific generics + clean-up.
Removing externalized class + renaming.
Ignoring stats files generated by R.
Reorganization + adding several writers / factories to evaluate different implementations.
Removing link to deleted class.
Reference TrieMap implementation no longer maintained. It shall be seen as a template, documenting the general case.
Removing Reference TrieMap; optimized version becomes the new canonical implementation.