The Stacks project

Added a new chapter

We moved the later part of the chapter on \'etale cohomology
to a later spot in the Stacks project because this will be needed
in order to make sure there are no forward references later on.

By the way, currently there are 3 forward references which we will
fix soon.

Typography...

Tags: Added new tags

	Mainly new tags for lemmas/propositions/theorems in the chapter
	on etale cohomology.

Etale Cohomology: More edits

	Now it passes the tests from parse.py but mathematically there
	are still lots of things wrong with this thing.

Etale Cohomology: More edits

	Now it passes the tests from parse.py but mathematically there
	are still lots of things wrong with this thing.

Etale Cohomology: Lots of edits

	One of the problems is that the coding style is completely
	different and nonuniform. Another is that there is a lot of
	material for which it will not be possible to find proofs
	internally in the stacks project for a long time. Perhaps we
	need to introduce a way of indicating this in the document.

	A better solution is perhaps to add only those parts to the
	actual stacks book published on the web which mesh well with
	the stacks project.

Etale Cohomology: Lecture notes from a course

	Taken by Thibaut Pugin, Zachary Maddock and Min Lee (in reverse
	alphabetical ordering).

	Fall 2009 Mathematics G6289 section 001
	ALGEBRAIC GEOMETRY

	The topic was etale cohomology of schemes. The intent was to
	work through the chapters [Arcata] and [Rapport] of SGA 4 1/2.
	The class met Tuesday and Thursday from 11-12:15 in Room 307 of
	the Mathematics Building.