Export BFGS configuration
Unboxed vector optimization.
fix a BUG!!!! swaped letters by mistake
new version 0.3.1
modules reorganization
new version 0.4.0
add graph module
add NFData instances
split of QR and eigen functions
add non-connected nodes
fix symmEigen instability by using qrHouse instead of qrGram
remove GeneralizedNewtypeDeriving for Data.Vector derivations due ghc 7.8 fixing unsafe deviration.

If GHC finds a workaround (type holes for data family) revert this commit.
move Graph.hs to its own file tree
add random walking clustering
improves VTK structure:
- types are more correct and simple
- square grids (non-UG) only accpet point data
add sub graph extraction
Improve MCL performance by optimazing Sparse matrix representation and multiplication.
Finalize MCL by adding configuration parameters