reworking dir structure for cmake build
readded folders
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Squashed 'dependencies/mpir/' content from commit ba01f26

git-subtree-dir: dependencies/mpir
git-subtree-split: ba01f2690d4605dba6c583a5dc7e81d285d5bdfb
Merge commit '017939b88681b0e072b2e57861be191d896ce50f' as 'dependencies/mpir'
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finalizing cmake
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fixed a few cmake errors
fixed some polytope stuff
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fixed polytope creation wrt dragging
fixed indexing errors in ml_vector, started adding stuff for phong shading
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made major lines render on top of minor lines
visualized quadedge edges
working on transparency
adding materials to visual items