Nyall Dawson b07a58c028 [processing] Port delete fields algorithm to c++
1:1 port for speed/compile time safety, no user-facing changes

Also add tests
2020-11-23 19:20:40 +10:00
..
2020-11-12 07:14:46 +10:00
2020-11-12 07:14:46 +10:00