* `@import("mach").core.gpu` has been renamed to `@import("mach").gpu`
* `pub const SYSGPUInterface` now has a default value (i.e. you do not need to write it in your main.zig, if you were.)
* You can now check `if (comptime mach.use_sysgpu)` for any conditional code you might have that should only run with sysgpu.
This (old):
```
pub const mach_core_options = core.ComptimeOptions{
.use_wgpu = false,
.use_sysgpu = true,
};
```
Has been replaced by this:
```
pub const use_sysgpu = true;
```
Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
