uniform syntax, indenting, documentation

[jonathancallahan]

This package brings together a few functions that were initially developed by different people in different packages. Please clean up and apply your best polish to this, non-functional aspect of the code base.

The most basic style guidelines are here:

https://sites.google.com/mazamascience.com/mazama-internal/home/r-style-guide

but you have developed an excellent and consistent style so please just bring your sensibilities to this package.