make args of withrepr objects available as attrs
Added mesh-edgewidth (linewidth) argument to PyPlot.mesh
preserve periodicity for boundaries and full slices
Merge pull request #17 from wijnandhoitinga/master

Added mesh-edgewidth (linewidth) argument to PyPlot.mesh
Merge branch 'master' of https://github.com/nutils/nutils
Merge branch 'master' of github.com:nutils/nutils
improve glue func, break groups convention
Merge branch 'master' into sane

Conflicts:
	nutils/topology.py