1.42 - fixes and Chapter 11 revisions

- replaced . with _ in variable names in several data examples
- man page for glimmer()
- improvements to formatting for compare and precis output
- various bug fixes for pointwise WAIC reporting and calculations
- added sd2 and var2 to compute stddev and variance using n denominator
- finally got map's DIC method to handle vector parameters
correctly...should refactor the abstraction layer using what I learned
in the process
- WAIC methods can return p_WAIC as pointwise as well---useful for
measuring flexibility of individual points