Unity TextMesh Pro

References
https://forum.unity.com/threads/cant-seem-to-update-to-latest-textmesh-pro.511775/
https://forum.unity.com/threads/textmesh-pro-useful-information-download-links.458634/#post-3304434
https://forum.unity.com/threads/after-update-textmeshpro-components-no-longer-available.486143/
https://forum.unity.com/threads/an-assembly-with-the-same-name-textmeshpro-has-already-been-imported.460786/
https://forum.unity.com/threads/an-assembly-with-the-same-name-textmeshpro-has-already-been-imported.460786/
https://answers.unity.com/questions/639065/custom-dll-not-quite-recognized-by-unity.html