A dotenv solution for Rust.
Write the environment variables in the env files and access them later using the `var` function:
```
KEY=value
```
```rust
use dotenv_plus::{
};
DotEnv::new().run();
assert_eq!(var("RUST_ENV"), "production");
assert_eq!(var("KEY"), "value");
```
```sh
RUST_ENV=production cargo run
```
This project is licensed under the terms of the MIT license.