* Add package.json, tsconfig.json, and change gitignore
* Typescript Types
* Make World a single class, refactor of all query types
* Fix InferComponents types due to typo / misunderstanding
* Bump dependencies
* Fix get type to include undefined and add documentation
* Remove non-user facing types
* Rename PossiblyUndefinedPack -> Nullable
* Some changes to how EntityIndex is handled
* Consistent formatting
* Remove EntityIndex related type definitions
* Match API
* Doc comments
