Naming

Here are the emergent-specific naming conventions -- please use these to keep the code as readable and consistent as possible!

First, we follow all the general Go conventions:

• https://golang.org/doc/effective_go.html#names
• https://github.com/golang/go/wiki/CodeReviewComments

And here are some additions for the GoKi framework:

• https://github.com/goki/ki/wiki/Naming

Beyond those, we have the following more specific cases:

Accessors

Generally provide 2 methods for accessing elements in cases that might fail (e.g., by name):

• ThingByName(name string) *thing
• ThingByNameCheck(name string) (*thing, error)

We should adopt this convention for GoKi too...