Support enabling linting on save for specific buffers

Here's my use case:

for most filetypes, I want my configured global behavior of lint-on-save (only) to apply. For specific file types (c++, mostly), I want *all* automatic linting disabled, but I *do* want to be able to manually run linting as needed. I've tried setting `ale_lint_on_save` to 0 in `ale_pattern_options`, but it did nothing. Is there a way to accomplish this currently, or just a missing feature? Great plugin - Thanks.