Jonathan Van der Cruysse

WIP: Support custom allocators, implement a bump allocator

10

This PR allows `@cuda` callers to pick a custom allocation function and implements a bump allocator, as per your request, @maleadt, in #419. I also threw in an example program...

EXPERIMENTAL: Implement a GC

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Hi! Here's a PR that implements a garbage collector for CUDAnative. Major additions include: * The garbage collector itself (`gc.jl`). The GC is a non-moving, semi-conservative, stop-the-world GC that uses...