super.foo() should be allowed in class properties

[loganfsmyth]

Pulled from babel/babel#5104 but going to leave that open so we make sure the transformation also works once we fix the parsing for it.

Input Code

class Fails extends class { c(){} } {
  c = super.c();
}

Expected Behavior

Should parse successfully.

Current Behavior

Throws the syntax error 'super' outside of function or class (2:5)

Your Environment

software	version
Babylon
node
npm
Operating System