Completely remove stlplus

[jolting]

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[jlblancoc]

I love this one, thanks!! 👍

Being thinking a lot on this recently... we should also add definitions for FooConstPtr in addition to FooPtr, like in PCL, don't you agree?

I also thought (but hasn't tested it yet) that perhaps we could do (via the DECLARE_XXX_POST() macros)

    using FooConstPtr Foo::ConstPtr;
    using FooPtr Foo::Ptr;

and declare the inner types ::Ptr and ::ConstPtr, with those above for keeping backwards compatibility.

Just some ideas without too much thinking.... it may be impossible to do if we need to forward declare them, though...

[jolting]

Personally, I find it difficult to generalize a class when the way it's allocated is so integral to its definition.

Of course using or typedefs within a class doesn't really increase the complexity much, so I'm for the FooConstPtr and FooPtr convention.

I'm under the impression that the DECLARE_XXX_* macros could be replaced by either a couple of using statement with and a templated class. Still thinking about the details though.