v0.17.0

• Adding HashedArrayTree.
• Adding BitVector.
• Adding #.frequency to MultiSet.
• Adding #.grow to DynamicArray.
• Adding #.reallocate to DynamicArray.
• Adding #.resize to DynamicArray.
• Fixing several MultiSet issues.
• Renaming DynamicArray to Vector.
• Renaming the DynamicArray.initialLength option to initialCapacity.
• Renaming DynamicArray.allocated to capacity.
• Optimizing MultiSet performance.
• Optimizing SparseSet memory consumption.