This commit reflects changes to clang-format rules. Unfortunately,
these rule changes create a massive change to the codebase, which
causes an apparent rewrite of git history.
Git blame's --ignore-rev flag can be used to ignore this commit when
attempting to `git blame` some code.
Using the straight reinterpret_cast runs into type aliasing issues,
which manifest on armhf. C++20 adds `std::bit_cast` to deal with
exactly this, but memcpy is the pre-C++20 way to do it properly.
This simplifies the use of std::aligned_storage with just using an
`alignas` on AlignedBuffer itself so that the (only) data member gets
the proper alignment and saves a bunch of reinterpret_casts in favour of
just having the std::array as an ordinary member.
