Fixed a bug where S.filter added "results" class to S.
Cached some Array instances and methods, for performance optimization.
Cached some object instances and methods as well.
Organized the cache better.
Fixed a bug in the property-comparison plugin expression. In doing so, made it a lot better as well.
Renamed s..set -> s..children.
Moved some code around and renamed some methods for consistency.
Fixed and improved s.indexOf. It now accepts nothing, a query, or an Entity.
Removed a now-unused index property.
Made s.goto return a single entity if it's passed in, rather than needlessly wrapping it.
Made some internal functions that used s.goto use s.wrap instead.

This is more semantic and more direct.
Quick changes to make Entropy work in nodeJS again.
Fixed s.size test.