Hacks for Reactant (sadness)

[ptiede]

No description provided.

[ptiede]

@wsmoses I'll open issues for these but there are a number of issues I ran into while trying to get Reactant to compile

1.Broadcast over an array that is non Traced where the function depends on a struct that has traced components
2. elem_apply with StructArrays gives a conversion error because it keeps wanting to make a 1-element vector but that is just the struct
3. domainpoints gives a SimpleVector out of bounds bug
4. When broadcasting with a Ref and elem_apply_via_while_loop I get an all args must have the same length error

[ptiede]

On the brightside a bunch of stuff now works! I think I can move on to the polarization stuff now.