Examine possibility of using unity build to increase build performance #392
Description
Some research should be put into implementing unity build as it might increase build performance.
Some write-ups on the matter:
https://cheind.wordpress.com/2009/12/10/reducing-compilation-time-unity-builds/
https://randomascii.wordpress.com/2014/03/22/make-vc-compiles-fast-through-parallel-compilation/