Merge pull request #54 from joelkuiper/develop

Minor cleanup
Merge pull request #55 from joelkuiper/develop

0 always in xrange; arrows when CI outside xrange
hetforest as a function
Merge branch 'develop' of github.com:gertvv/mtc into develop
Ask to show more for plots with multiple pages
hetforest: remove sample invocation
Merge pull request #2 from gertvv/develop

Minor changes blobbogram, plot.mtc.result