start implementing mass lumping and implicit demag field
First working version for implicit demag field
working cbc.block implicit demag
Merge branch 'master' into dev
first try for a schur complement method
first somehow converging version of llg4
Merge branch 'master' into dev
repair cr demag field to work with current version of magnum.fe
Merge branch 'master' into dev
fix of llg4 and cleanup