Merge pull request #12 from CVerhoosel/trilinos

Added communicator to topologies created in writevtu
deprecate _asarray, new name asarray
Merge branch 'master' into trilinos

Conflicts:
	nutils/topology.py
have callstack remove empty list for >max depth
add figures log context
log cleanup, fix tracebacks for exc inside pariter
fix asarray bug
Added bubble function to gmesh()-generated topology.
Bug fix in bubble function
remove junk code: kronecker
fix bug in concatenate._take
Merge branch 'trilinos' of https://github.com/nutils/nutils into trilinos
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
update for libmatrix changes
Merge branch 'master' of https://github.com/nutils/nutils
ignore indent of comments in debug traceback
Merge branch 'master' into trilinos

Conflicts:
	nutils/element.py
	nutils/topology.py