Added --var option

Added --var option to define environment variable after loading env file

Using anyhow to manage errors and run command in shell

0.1.6

Managing errors with anyhow and running command in shell

Improved Rust idiomaticity

0.1.5

Fix imports

Fixed return value

0.1.4

Fixed return value

Fixed dotenv file loading

Parsing dotenv file so that it is compatible with make version

Renamed project dotenv

Renaming of project

Added Windows binary

Added Windows binary in distribution archive

First Release

First release without Windows binary