It would have been great to keep the alerter features in v2.0.0 of terminal-notifier, but sadly that wasn't possible. At any rate, together with osascript, terminal-notifier is one of the indispensable tools for bridging shell scripts and the GUI. Also great for bundling it in Platypus applications. Couldn't live without those three tools. Fantastic helper, period.
Hint: change the Bundle ID of the terminal-notifier.app, when you bundle it with other applications; that way you can create individual notification settings for each instance of terminal-notifier.
PS: version 2.0.0 was actually released in Nov 2017, not in 2019. Still working fine on Mojave.