Tweak code style
Fix a bug due to compression. fix #710
Fix a bug for shim plugin when src is equal to key. fix #706
Improve getUnloadedUris speed
Revert code of plugin shim
Update version to 2.1.0
Remove circular dependencies support
Comments specs for circular dependencies
Comments specs for circular dependencies
Rebuild packages
Remove async loading support for sea.js self. close #733
Remove test specs for bootstrap async
Rebuild packages
Remove data-main & data-config support. close #734
Rebuild packages
Remove specs for data-api
Remove unnecessary code
Make shim config is seperated from alias config. #744
Rebuild packages
Improve comments