No concatLimit? #973
Description
I like using some of the higher-level functions instead of just parallel all the time, but in practice it's common to not have control over your input array, making parallel executions pretty dangerous in lots of real-life apps without specifying limits.
Just a suggestion: adding limits to other parallel functions would be a huge benefit to those of us who want to use the convenience methods but are wary of not limiting concurrent processes out of memory concerns, too many open connections, etc.