Heads up: The version 3.7.2 installer installs what looks to actually be VST2 version 22.214.171.124, which crashes Tracktion Waveform 10 when coming back into an edit that has ToneLib in it. It's odd in that the VST2 ToneLib Help button shows version 3.7.2, yet the description that shows up in Waveform's plugin page shows 126.96.36.199.
At first I didn't realize that the VST3 version was loading into the standard C:\Program Files\Common Files\Steinberg\VST3 path, so I copied it from there into my Waveform custom plugin path, which brought it into W's VST3 plugin list. Looking at the VST3 version's description information revealed that it was indeed at 3.7.2.
I then loaded the VST3 version and it ran flawlessly in Waveform. Super grateful for this great plugin. Cheers.