Oi

I propose to teach tt connect to interactively request a password if a username is specified but the password itself is not specified in the options, uri or environment variables....

Support config file in TOML format

2

subj. Use: https://github.com/yaml/libyaml

`--dry-run` - test run of the application, will display what exactly will be launched. The option allows you to debug the environment of instances.

Add new feature to expand qcow images. Example: ```sh $ qemu-img resize disk.qcow2 30G $ qemu-img resize disk.qcow2 +10G ```