fix asarray bug
Added bubble function to gmesh()-generated topology.
Bug fix in bubble function
remove junk code: kronecker
Consistent enumeration convention for TriangularElement
mesh.gmesh() cleanup, identify structured boundary (thanks to last commit on counting conventions)
Merge pull request #15 from timovanopstal/sns

Bubble function for gmesh topologies
restore traceback info for evaluation errors
merge from 'origin/master' into ccelem to get eval err info
Merge branch 'master' of https://github.com/nutils/nutils
ignore indent of comments in debug traceback
add cache flush/info
Merge branch 'master' of https://github.com/nutils/nutils
Merge in origin/master for enhanced cache-tracking tools.