Undocumented: Goby's modules can be new

[hachi8833]

Actually, I found the undocumented behavior some months ago, and the st0012 and I left this as is by now.

Goby's modules can be instantiated:

#Goby
module Foo
end

Foo.new       # modules can be instantiated in Goby
#» <Instance of: Foo>

# of course inheritance of modules is prohibited
class Bar < Foo
end
#» InternalError: Module inheritance is not supported: Foo

Of course this is prohibited in Ruby.
But I think the behavior suggests using modules more frequent rather than inheritance so I prefer to it.

Just close the issue if this is OK > @st0012
If not, let get started a discussion.

[st0012]

I think this should be prohibited because it'll be very confusing for the users who read the code later, and this violate Goby's "explicit" principle.