The Stacks project

Fixed small typos

Clean up treatment module of differentials

Move the construction of \Omega to the setting of ringed spaces.
Redefine the module of differentials using the universal property. The
agreement with the conormal sheaf of the diagonal is now a lemma. Tried
to find all places where this was used...

Clean up treatment module of differentials

Move the construction of \Omega to the setting of ringed spaces.
Redefine the module of differentials using the universal property. The
agreement with the conormal sheaf of the diagonal is now a lemma. Tried
to find all places where this was used...

Started tags infrastructure

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

Changed the index to at least have an alphabetized list of terms defined
in the project. Thanks Cathy!

	modified:   algebra.tex
	modified:   categories.tex
	modified:   constructions.tex
	modified:   exercises.tex
	modified:   fpqc-descent.tex
	modified:   groupoids.tex
	modified:   homology.tex
	modified:   hypercovering.tex
	modified:   modules.tex
	modified:   morphisms.tex
	modified:   properties.tex
	modified:   schemes.tex
	modified:   scripts/functions.py
	modified:   scripts/make_index.py
	modified:   sheaves.tex
	modified:   simplicial.tex
	modified:   sites.tex
	modified:   spaces.tex
	modified:   topology.tex

Differentials for a morphism

	modified:   morphisms.tex