This is an addon on CurseForge that has been abandoned for nearly a year. The July 2018 version is broken and was uploaded that way, with a promise to release a working version SOON(TM). I greatly miss this addon, and lack programming skills, so I was wondering if anyone either knew of an alternative, or was willing to make one, or could provide LUA I could cut/paste to get it working again.
The aforementioned addon lets you pair pets and mounts, so when you mount a particular mount, it summons the paired pet, too. Let's you opt whether to unsummon the pet when you dismount. Also has dismiss pet when stealthed option.
Addon is:
https://www.curseforge.com/wow/addons/mount-mini-me
If anyone knows of an alternative, this addon is greatly missed!!! Thanks.