Fix hanging on restart after update

[TealSeer]

Description

Fixes #140
Command.Run waits for the child process to finish before continuing execution, this blocks os.Exit from running, Command.Start doesn't wait.

Type of change

• Minor changes or tweaks (quality of life stuff)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update