Fix segfault which occurred when

init_knobs:in_memory=.true. and fields_knobs:force_maxwell_reinit=.false.

Key change is

• if (overrides_obj%force_maxwell_reinit) then

• if (.not.overrides_obj%force_maxwell_reinit) then

This avoids the segfault by ensuring arrays are allocated at initialisation time. We could(/should) probably just check the allocated status at the point where we want to store values but that would be a larger change.

This should address #55 (at least in part)

Also fixes

1. Potential hang with in_memory=.true. – added missing broadcast

2. Fix templated generation from ruby for builds without the new diagnostics.