Put in begining of parabolic cylindrical coordinates
Add formulas for parabolic geometry, looks like bugs
Fix a bug in the source terms calculation, but still have nonsense
Get parabolic coordinates working
Set up a jet in gas-pressure magnetic tension balance

The jet base Lorentz factor here is 5, and the ambient density is 1/100
of the jet density. A reverse shock forms behind the blast wave, and
what might be RT instability begins to develop. This was run up through
t ~ 50.0, until the jet is about half way up the domain.
Merge branch 'parabolic' into jet
Modify the magnetic_flux_to_cell_center function: assume zero normal B