Photon v0.13.0 with offload

[IchorDev]

On Monday, 18 August 2025 at 15:20:14 UTC, Dmitry Olshansky wrote:
> ```d
> void main() {
>     startloop();
>     go({
>         goOnSameThread({
>             writeln("Blocking computation");
>             writeln("Integral:", gauss(0.0, 10.0, x => x*x, 
> 1e-7));
>         });
>     });
>     runFibers();
> }
> ```

One thing that I think could really be improved about Photon is 
these funny symbol names.
- `startloop` is all-lowercase. It's two words so shouldn't it be 
`startLoop`?
- `go` doesn't actually do any 'go-ing' right away, since fibres 
are deferred; so it's a little misleading. Maybe it could be more 
like `schedule`?
- `goOnSameThread` is hyper-explicit compared to `go`, but its 
name still didn't help me understand it until I read the docs. 
Perhaps `goSync` or `scheduleSync` would be more intuitive?
- `runFiber` is an unfortunate victim of the American-English 
disease. It would be nice to have an alias for 'fibre', which is 
the spelling used in the rest of the English-speaking world.

Would also be great to have a function named something like 'end 
loop' that cleans up everything that the library uses internally 
and allows Photon to be freshly re-initialised with `startloop` 
again later. This would be essential to using Photon in a modular 
environment. If Photon is no longer needed, then we don't want it 
hogging resources until the process dies. Obviously calling such 
a function should not work within a fibre.