v9

Changelog

Breaking

• Move API key config to $XDG_CONFIG_HOME/gtt/server.yaml or $HOME/.config/gtt/server.yaml (d83cbab)
• API key should write under api_key.translator_name.value instead of api_key.translator_name (3b0edef)

Added

• DeepLX translator (#28)
• Read API key from file (3b0edef)
• Nix package (#27) (by @linuxissuper)