Importing "package:leap/leap" should only import the core Leap API

[kurtome]

Ideally the core Leap API is mostly just:

• LeapGame
• LeapMap
• LeapWorld
• PhysicalEntity
• a few other supporting classes and types

Then client code should selectively import things like reusable characters, reusable ground tiles, etc. via:

• import "package:leap/templates/characters"
• import "package:leap/templates/input"

That way these other classes are clearly delineated from the core library, and clarify that these other classes are starting points to guide which will often just guide you to build your own custom implementation.

[erickzanardo]

That sounds good to me! If we take flame as an example, that is similar how it is structured, we have package:flame/flame.dart for the more global stuff, package:flame/game.dart for the things related to game, and so and so forth.