Merge branch 'release/0.2.2' into develop
improve `Widget` & add `./base/state`, `./base/event`, `./base/dom`, `./base/attribute`
use hammer.js for gesture
Merge branch 'feature/hammer' into develop
update deps && add npm deps.
update esl 1.8.2 & remove metadata (generated by old version edp)
amd
`ImageView` use `hammer.js`
Merge branch 'develop' of https://github.com/ecomfe/saber-widget into feature/imageview-hammer
up esl to 1.8.2
Merge branch 'feature/imageview-hammer' into develop
update del
added watch config.
added saber-string dep.
updated demo deps.
Merge branch 'develop' of github.com:ecomfe/saber-widget into develop
up hammer to 1.1.3
add `beforeload` & `afterload` event
release 0.2.3
Merge branch 'release/0.2.3'