v2.3.1

What's changed

• Run lk app env from anywhere by @rektdeckard in #475
• Allow custom env file paths by @bcherry in #482
• Simplify usage text by @rektdeckard in #481
• Clearer error messages for invalid Sandbox ID by @bcherry in #480
• Fix error moving temp files when running lk app create from non boot disk by @rektdeckard in #490
• Prettify output from lk load-test by @rektdeckard in #491
• Various bugfixes
• Various dependency updates

Full Changelog: v2.3.0...v2.3.1