zenplots package documentation file
zenplot now (invisibly) returns a list with two extra classes
zenplot to identify that the structure is a zenplotzengraphics, zenGrid, or zenLoon to indicate which graphics
package was used.loon zenplots to be turned into ggplots via package loon.ggplotdocumentation updated accordingly.
updated documentation on zenpath to mention that pairs must describe
a connected graph.