quadtree is connected and using standard resolution
Merge branch 'gfx' of github.com:jonac/concprog_project into gfx
Merge branch 'gfx' of github.com:jonac/concprog_project into gfx
modified quadtree so we actually keep track of centre of mass
we are now building a quadtree... gotta do something though
added basics to force calculation
seems to work... wierd behaviour though
missed to add the world files xD
moved seq to seq2 and fixed print_tree
added seq2 to branch
Add seq2 to bin programs
Merge branch 'master' into barnes_hut

Conflicts:
	Makefile.am
	src/quadtree.cpp
	src/quadtree.hpp
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