`develop` branch requires fairly recent compilers

[shkodm]

On develop branch, now at least due to the std::exclusive_scan / std::inclusive_scan, with gcc versions prior to 11.1 (tested on Compiler Explorer), and icc version below 2021.7 TCLB compilation fails, which can be a bit annoying as stock gcc on some clusters is 8.5 (e.g. Rangpur, Bunya).

[llaniewski]

Can confirm on Setonix.

It's possible that we have to purge C++17 from the code.