Echo JS 0.11.0

Thank you!
I'll try to think about it again :)

I removed supporting object intentionally.
There are two reason:

1. You can use expression instead of object.
ex) true && 'class1' or false && 'class1'

2. I failed to find the reason that must use object.
Array has many method and that is very useful.
But I cannot sure object has more advantages than expression.

If you know some good use case, please tell me!!
I want to know it :)