Remove std::par

[brson]

Just a few parallel algorithms. This is unused and probably not efficient enough for real use. If we're going to do this it will need to be rethought from scratch.

[thestinger]

Is it possible to add an API that would spawn a task assigned to an exclusive OS thread?

[brson]

@thestinger There is already a way to do that by creating a task with the SingleThreaded scheduler mode. The mechanism may change with the new scheduler, but it's an important use case so there will continue to be a way to dedicate an entire thread to a single task.

[nickdesaulniers]

assign=me

[emberian]

@nickdesaulniers did this land? if not do you want to rebase your patch?