Created tiles for the PEPS W state.
Split Algorithm section into Optimization and Expectations subsection.
Illustrated the left and right canonical forms.
Created diagrams for E^S(O).
Made some minor tweaks.
Added prelude in the Optimization section on the quantities relevant to costs.
Wrote up algorithm for computing the expectation value of a local operator.
Fixed some things and improved consistency in the appendix.
Put 1D and 2D algorithm drawings in separate directories.