Memory leak seems to be fixed in WGPU 24. Stability now quite good.

[John-Nagle]

In WGPU 22 there seemed to be a memory leak somewhere. In about 18 hours of testing, 32GB of RAM would fill. Now, with WGPU 24, RAM consumption in my Sharpview viewer seems to be steady. I've been able to run for 30 hours. Neither CPU nor GPU memory usage is increasing. This is in a system that's constantly loading and unloading meshes and textures as the viewpoint moves around a huge virtual world. This stresses the lower levels of the stack rather hard.

Stability is good. No crashes at the WGPU level. Found and fixed some problems in my code and in Rend3, and those are now behaving better. 24 hours with no problems is now normal.

Nice to get to this level of stability. Thanks.