The bug in SDM was related to the diffusive term for non-carthesian meshes
The added Explicit Runge Kutta scheme makes use of the Butcher tableau, and
stores as many residuals as there are stages.
Preconfigured ERK methods are available for order 1,2,3,4
New mesh transformers to
rotate meshes
translate meshes
import variables from other meshes
create fields using functionparser, where existing fields are included in the parameters