Added some new flags:

• -a makes the timer take up the whole terminal
• -n=false disables the default system notifications
• -s will cause a short beep to play when the timer finishes
  • On Linux sounds require permission to access /dev/tty0 or /dev/input/by-path/platform-pcspkr-event-spkr files for writing, and pcspkr module must be loaded. User must be in correct groups, usually input and/or tty.
  • On macOS, you must enable Audible bell in Terminal --> Preferences --> Settings --> Advanced.
  • Note that on some platforms a sound will be included with a desktop notification, making this unnecessary.

Full Changelog: v0.1.0...v0.2.0

This is the super basic usage I was looking for. I've attached a Linux and Windows binary.