Rewrote how buffifier web worker memory management fundamentally works.

[addunn]

Complete overhaul of project.

Improvements:

• Now the only thing needed to make a JS object live in a shared memory buffer is to have the class inherit from BaseClass, and you define the props in a static block with this.buffify({...}). See objects.js.
• Uses static {} blocks in classes to be able to set up the memory without having to explicitly call some buffifier method outside its class. Keeps code nicer.
• When a block is unallocated/overwritten, there's now no need to set all references to that block to null. Because now each block will also have a "generational index" that gets incremented when the block contains a new object... And all pointers to the object are two values: block index and generational index.
• Made memory blocks be two fixed sizes in the buffer for speed, reducing metadata, and simplicity. First block size grows from the beginning of the buffer, while the second block size grows from the end of the buffer.
• Compacting/defragging not needed.