Update to fixedbitset 0.5

[james7132]

Objective

Improve code quality involving fixedbitset.

Solution

Update to fixedbitset 0.5. Use the new grow_and_insert function instead of grow and insert functions separately.

This should also speed up most of the set operations involving fixedbitset. They should be ~2x faster, but testing this against the stress tests seems to show little to no difference. The multithreaded executor doesn't seem to be all that much faster in many_cubes and many_foxes. These use cases are likely dominated by other operations or the bitsets aren't big enough to make them the bottleneck.

This introduces a duplicate dependency due to petgraph and wgpu, but the former may take some time to update.

Changelog

Removed: Access::grow

Migration Guide

Access::grow has been removed. It's no longer needed. Remove all references to it.