Remove things that are already in lodash

[daedalus28]

There's a lot of overlap here with things that are available in the latest version of lodash. Can we trim this down to just what's new, and for things that are in lodash now with a different name, separate them out in a section of aliases? E.g. always and k are aliases for _.constant, pipeline seems to just be an alias for flow, etc.

[daedalus28]

An example of what I'd like to see (based on the first page of the docs):

Array Builders

Contrib Function	lodash equivalent
cat	concat alias
chunk	same as lodash chunk with support for third pad argument
chunkAll	no known equivalent
cons	similar to concat but no known equivalent (and seems pretty confusing)

I personally don't have the time to really dig into all of these at the moment, but I think this would be really valuable for this project and probably make it a lot more viable and easy for @jdalton to identify candidates for promotion to lodash proper.