add maintainers
rebuild
fix #22
update history
add more test case, add o.hasOwnProperty
mergeAttrs
Merge pull request #25 from lianqin7/master

attribute 性能优化
improve
U: update doc
Merge remote-tracking branch 'origin/master'
U: support karma close #28
fix problem of demo missing exports
U: add attrs usage doc
add link to class events
Merge branch 'master' of github.com:aralejs/base
add testcase
update doc, close #27
U: update docs
U: update karma to 0.10.2
Add a Bitdeli badge to README