Various teaching-related LaTeX files, including several independent LaTeX repositories as subtrees

latest commit 595366498e Nigel Stanger authored on 23 May
	beamerThemeOtagoPlain	Squashed 'beamerthemes/' changes from e14d33c..e9c6863	5 months ago
	beamerthemeOtago	Squashed 'beamerthemes/' changes from eb14121..2d36aa0	7 years ago
	beamerthemenzcs	Squashed 'beamerthemes/' content from commit eb14121	8 years ago