Invalidate caches on refresh()

[serenity4]

Implements #20.

Tests don't all pass at the moment, it seems that only code instances with StructureCache() and ADCache() as owners get invalidated:

julia> display(getproperty.(cached, :max_world))
8-element Vector{UInt64}:
 0xffffffffffffffff
 0x0000000000009824
 0x0000000000009824
 0xffffffffffffffff
 0xffffffffffffffff
 0xffffffffffffffff
 # these two were from another (previous) `refresh()`
 0x0000000000009814
 0x0000000000009814

julia> for ci in cached; println(ci.owner); end
DAECompiler.RHSSpec(DAECompiler.TornCacheKey(BitSet([1]), BitSet([]), BitSet([]), BitSet([]), Pair{BitSet, BitSet}[]), 1)
DAECompiler.StructureCache()
DAECompiler.ADCache()
DAECompiler.RHSSpec(DAECompiler.TornCacheKey(BitSet([1]), BitSet([]), BitSet([]), BitSet([]), Pair{BitSet, BitSet}[]), 1)
DAECompiler.TornIRSpec(DAECompiler.TornCacheKey(BitSet([1]), BitSet([]), BitSet([]), BitSet([]), Pair{BitSet, BitSet}[]))
DAECompiler.SICMSpec(DAECompiler.TornCacheKey(BitSet([1]), BitSet([]), BitSet([]), BitSet([]), Pair{BitSet, BitSet}[]))
DAECompiler.StructureCache()
DAECompiler.ADCache()

which I can believe might be due to the other keys not being singletons, which may surface a bug - as currently implemented edges should be identical across all owners, except maybe ADCache().

[serenity4]

This requires JuliaLang/julia#58324 to avoid a crash during invalidation.

[serenity4]

Tests now pass locally.

I'm thinking that instead of passing edges around from top-level like currently implemented (which is a bit cumbersome), we could instead always add an edge to the single CodeInstance that is the source in cache_dae_ci!. Does that sound correct to you?

[Keno]

Does that sound correct to you?

Yes, I suggested this in one of the review comments (#24 (comment))

[serenity4]

Indeed, I just wanted to confirm you weren't only talking about that specific case 👍

[serenity4]

Tests are passing, this is good for final review & merge.