Various fixes that have been sitting around for too long!

• #36 (fixed via a46e237): Linux path compatibility fixes, thanks @fundale
• #37: Add support for Unity 2021, thanks @kafeijao
• #39: Fix assembly resolving for third-party installation wizards, thanks @xuan25
• 98b2961: Fix LTCGI_SPECULAR_OFF and LTCGI_DIFFUSE_OFF for v2 API shaders, reported by Mochie

⬇️ Creator Companion/VPM Install

For standalone Unity, you can import LTCGI as a git package with the URL: https://github.com/PiMaker/ltcgi.git