Release candidate version of daachorse 1.0.0.
Compared to version 0.4, this version makes the following major changes to the API:
* `CharwiseDoubleArrayAhoCorasick` is now exposed to the crate root.
* `Changed Match::value()` to a generic type `V`. Users can use any type that implements `Copy` and `Default` for values, not just integers. Due to this change, it may be necessary to specify the value type explicitly in some situations.
* Added `Serializable` trait. The automaton can be serialized only if the generic type `V` described above implements this trait.
* Removed dependency on *std* crate.