Use Revise.jl in workers and rethink anonymous functions

[JordiBolibar]

Right now we were not using Revise.jl in the workers. I just discovered this because as soon as I implemented it in #299 I broke everything. Apparently, as it is explained here, Revise.jl cannot handle anonymous functions in workers. We are extensively using this in pmaps, since it's the only nice way I've found to iterate over just a subset of the input arguments while keeping others fixed.

Surprisingly, the effect of not using Revise.jl in workers is not that catastrophic, meaning that I don't have the feeling the workers are recompiling everything every time there are code changes. Nonetheless, it would be interesting to find a good workaround for anonymous function usage, since I think there might be other issues involved around them.

For now, I'll just remove @everywhere using Revise from #299.

[JordiBolibar]

Following more testing, this seems to work now. So I'll keep it for now and come back to this if there are issues.