release 0.3.0 version

Author: Mapet13

Cargo.lock

@@ -3,7 +3,7 @@
 [cr]: https://crates.io/crates/opensimplex_noise_rs
 [OpenSimplex noise](https://en.wikipedia.org/wiki/OpenSimplex_noise) is a random noise [algorithm by Kurt Spencer](https://uniblock.tumblr.com/post/97868843242/noise), made as a patent-free alternative to Perlin and Simplex noise.
 
-This Rust port currently supports 2D and 3D noise.
+This Rust port currently supports 2D, 3D and 4D noise.
 
 ### Examples:
 [![example](examples/demo_3d/examples/noise_3d_example.gif)](https://github.com/Mapet13/opensimplex_noise_rust/tree/master/examples/demo_3d)
@@ -18,11 +18,12 @@ let value = noise_generator.eval_2d(x * scale, y * scale); // generates value in
 ###### Just add this line to Cargo.toml file in your Rust project
 ```toml
 [dependencies]
-opensimplex_noise_rs = "0.2.1"
+opensimplex_noise_rs = "0.3.0"
 ```
 ### Code Examples:
  - [2D Demo](https://github.com/Mapet13/opensimplex_noise_rust/tree/master/examples/demo/)
  - [3D Demo](https://github.com/Mapet13/opensimplex_noise_rust/tree/master/examples/demo_3d)
+ - [4D Demo](https://github.com/Mapet13/opensimplex_noise_rust/tree/master/examples/demo_4d)
  - [Island Terrain Generator](https://github.com/Mapet13/terrain-generator-2d)
 
 ### License