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Install the latest stable version via Composer:
composer require massimo-filippi/composer-tools
Install the latest develop version via Composer:
composer require massimo-filippi/composer-tools:dev-develop
To compile .po files to .mo files use the following console command from root of the project:
vendor/bin/compile-translations
Output of the script should be as following:
Start compiling .mo files
Compiling file: language/cs_CZ/application.po
Compiling file: language/de_DE/application.po
Compiling file: language/sk_SK/application.po
Compiled.