Added eig function
Removed comment separator
Wrong shape in the EigenVector class
Added eig and eigh to the numeric module
Fixed eigenvector
Merge branch 'master' of https://github.com/wijnandhoitinga/nutils
Merge pull request #16 from rodyvtu/eigendecomp

Eigenvalue
add eig .opposite, unit test
Merge pull request #20 from wijnandhoitinga/master

Add image to PyPlot
Merge branch 'master' of https://github.com/nutils/nutils
Merge https://github.com/wijnandhoitinga/nutils