Element and Molecule refactors.

Signed-off-by: yushijinhun <yushijinhun@gmail.com>
Add radiation for molecule.

Signed-off-by: yushijinhun <yushijinhun@gmail.com>
Merge branch '1.7-update' into enhance-api
Add molecule decay.

Signed-off-by: yushijinhun <yushijinhun@gmail.com>
Merge branch '1.7-update' into enhance-api
Update en_US.lang and zh_CN.lang

Signed-off-by: yushijinhun <yushijinhun@gmail.com>
Merge pull request #255 from yushijinhun/enhance-api

Add molecule decay