OPTIMIZATION:
- BipartiteGraph::isConnected should be optimized using boost::graph
- Can the FactorGraph constructors be optimized further?
- Cache second-order neighborhoods (delta's) in BipGraph?
- Would it be a good idea to remove the states() caching from VarSet? 
  Then, we could turn a VarSet into an IndexSet (set of integers).
  This may restrict the use of findVar().

- Idea: use a PropertySet as output of a DAIAlg, instead of functions like maxDiff and Iterations().
- A DAIAlg<T> should not inherit from a FactorGraph/RegionGraph, but should store a reference to it

TODO FOR RELEASE:
- http://www.boost.org/development/requirements.html#Design_and_Programming
- Test {Visual C++, cygwin, gcc various version} compatibility; state tested compilers/build environments in README
- Figure out which libraries are required and document in README
  boost headers, boost::program_options library, boost::graph library,
  boost::math library (under Windows)
- Change email address

FILES IN SVN HEAD RELEVANT FOR A LATER RELEASE:
	matlab/dai_potstrength.*
	matlab/dai_bpconvbound.*
	utils/fg2dot.cpp
	utils/viewfg
	tests/aliases.conf
	tests/testall
	tests/test.cpp ("limit")
	all subdirs not included in git:
		bugs, experimental, tests/errorbounds, tests/kees, tests/large, tests/ldpc, tests/uai

DOCUMENTATION READY:
- bipgraph.h, bipgraph.cpp
- var.h