https://github.com/lemire/FastPFor

Modified to remove 24 and 32-bit versions of the bitpackingaligned functions since we won't need them, and to remove unneeded includes in common.h.
Modified to replace __restrict__ with __restrict for compatibility with MSVC.

Included 16-bit support from DuckDB (MIT License below):
    https://github.com/duckdb/duckdb/commit/68abedc20f290b53a2d1073b82e5cf73aef1e9f7
Included 8-bit support from DuckDB (MIT License below):
    https://github.com/duckdb/duckdb/commit/bb0df14323447523aa1e8ef09ab37278f7f2db39
    https://github.com/duckdb/duckdb/commit/29698b8b3bec89a80d6eebcd0cf49972e5280645

    Copyright 2018-2023 Stichting DuckDB Foundation

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to
    deal in the Software without restriction, including without limitation the
    rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
    sell copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.
