Minor tweaks to plots
Started work on forestplot
Finished forestplot, added test
Minor tweaks to plots
Started work on forestplot
Finished forestplot, added test
Fixed bug with forestplot labels; added burn-in parameter to statfunc decorator
Continued work on autocorrelation plot
Plotting histogram for discrete variables in traceplot
Merge branch 'plots' of github.com:pymc-devs/pymc into plots

Conflicts:
	pymc/plots.py
traceplot uses histogram for int types
Tweak to traceplot
Finished autocorrplot; added plot tests
Merge pull request #257 from pymc-devs/plots

New Plots