release 0.2.1 version

Author: Mapet13

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "opensimplex_noise_rs"
-version = "0.2.0"
+version = "0.2.1"
 authors = ["Mapet <[email protected]>"]
 edition = "2018"
 readme = "README.md"

Cargo.toml

@@ -18,7 +18,7 @@ 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 = "0.2.0"
+opensimplex_noise_rs = "0.2.1"
 ```
 ### Code Examples:
  - [2D Demo](https://github.com/Mapet13/opensimplex_noise_rust/tree/master/examples/demo/)