add outline for path tracer in Rust posts
write down initial thoughts on porting
add note about bracket style
add note about Mul impl
add note about overloading
add note about module structure
add note about mathematical method syntax
add note about bracket style again
add note about file naming and casing conventions
add note about rng
draft first post in the Rust path tracer series
move draft to correct directory
add note about performance
rewrite first post in path tracer series
update path tracer post
update post date
add note about method calls on numbers
add performance time on Windows
add note about Option
add note about immutability