+ dom-repeat reuses elements for the sake of efficiency, and
according to [1], it’s considered an anti-pattern to do one-shot
state setup by inspecting attributes/properties in ready/attached.
+ Move state management to be more explicit instead of one-time
setup in ready().
[1] https://github.com/Polymer/polymer/issues/1713
Bug: Issue 3979
Change-Id: I5a7d2ae222223cf1ac8703cd30c66f004b606cfc
There is no change in functionality. Only moving things around.
+ Separate html from the js.
+ Place the unit test for a component within the same folder.
+ Organize the components in subfolders.
Change-Id: I51fdc510db75fc1b33f040ca63decbbdfd4d5513
