easy_node
===
Smart pointer for graph nodes.
*The author of this crate is not good at English.*
*Forgive me if the document is hard to read.*
## What is this?
This crate provides some smart pointers optimized for
managing graph data structures.
* `Nr` - like `Rc`
* `Nw` - like `Weak`.
These smart pointers behavior is similar to `Rc` and `Weak`.<br/>
However, These smart pointer comparison is based on location.
## What's New?
v0.3.0
* Obsolete `upgrade_ref` method (unsafe misusing...).
* Obsolete `NrCell` and `NwCell` (not essential...).
* Add `base`, `as_base`, `from_base` method.