local changes to 04-unfoldings.tex
Merge branch 'master' of https://github.com/subodhvsharma/unfolding-concur
proof of uniqueness
Merge branch 'master' of https://github.com/subodhvsharma/unfolding-concur

Conflicts:
	04-unfoldings.tex
Merge branch 'master' of https://github.com/subodhvsharma/unfolding-concur