initial files
grunt combines separated sources
ignore rule was slightly changed
static files were moved into dist
grunt generates js file in dist
YUIDoc plugin was added
yuidoc task was added
sprite module was separated from mikan.js
actor system was separated from mikan.js
render system was separated from mikan.js
refined use case of sprite
added specifications

- added jasmine
- added simple specification of Sprite
added specification on sprites

- modified comments on sprites
- added specification of
  - construct
  - load
  - render
changed Sprite behavior of loading again

- loads image only once
changed actors use case

- use cases of actors have been refined
- Actor.isActor has been added
changed script

- source files are provided by a function call
- sources are automatically included in SpecRunner.html
changed use cases

- refined use cases
- refined comments
added Actor specification

- implemented Actor.isActor
- added Actor specification
added specification

- added specification of ActorSystem.makeActor
added specification

- refined messages of Actor.isActor specification
- added specification of ActorScheduler
- added specification of running scheduled actors