`<<` and `>>` operators overloaded but never used

In vec3.h file, the the << and >> are overloaded for take vector element from standard input, and to print it, but never used in anywhere. I'm not sure it's a problem but it simply isn't necessary.

[hollasch]

Ooh, that's a good point. The current code conflates vectors and colors, and in main.cc does the same operations to print out the pixel color (with an additional newline).

I think the operator<< is the way to go, but your point stands either way — we need to do one or the other.

[hollasch]

vec3::operator<< is used in theNextWeek/constant_medium.h.

[hollasch]

Resolved in #226, changes in development branch.