Merge pull request #9 from gassmoeller/grain_size_dependent_rheology

Bugfix for phase transition recrystallization.
Merge pull request #10 from gassmoeller/grain_size_dependent_rheology

Make compile.
fix a bug in the grain size change at phase transitions
Merge pull request #3 from jdannberg/grain_size_dependent_rheology

Grain size dependent rheology