The Stacks project

LaTeX: \Sch

	Introduced a new macro

	\def\Sch{\textit{Sch}}

	and replaced all the occurences of \textit{Sch} with \Sch.

Started tags infrastructure

	new file:   scripts/add_tags.py
	modified:   scripts/functions.py
	new file:   tags/initial_tags
	new file:   tags/tags

More topologies

	modified:   algebra.tex
	modified:   morphisms.tex
	modified:   topologies.tex

Copied over the stuff on Zariski sites to etale and fppf cases

	modified:   categories.tex
	modified:   fpqc-descent.tex
	modified:   spaces.tex
	modified:   topologies.tex

Start to begin more serious stuff on topologies and algebraic spaces

	modified:   Makefile
	modified:   chapters.tex
	modified:   etale.tex
	new file:   fpqc-descent.tex
	modified:   preamble.tex
	modified:   spaces.tex
	modified:   stacks-git.htm
	new file:   topologies.tex

Added stuff on fppf. fpqc, etale sites

	modified:   categories.tex
	modified:   etale.tex
	modified:   sets.tex
	modified:   sites.tex

Introduced big/small/affine Zariski/fppf sites

	modified:   etale.tex
	modified:   sets.tex