Have all rows have the same number of columns

See merge request !92

Adjust opconter to the csv style

See merge request !90

Fixup previous fix on base storage sizes

See merge request !89

Correctly pad the vector buffers.

We need more vector buffers for the tail loop!

See merge request !88

size is an expression so the result would be just some other expression.

We need more vector buffers for the tail loop!

Cleanup/small

See merge request !87

Feature/symbolic parameter functions

MR for #37 

Just saving this here for backup and visiblity, totally WIP.

See merge request !57

which reuses the poisson_dg ufl file with variants

The old formula contained some 'dim's instead of '2's,
which obviously works for 2D....

Tricky... some grad components depended on the sumfac kernels of the
other directions instead of their input...

... really elegant.