stay in sync with little fixes over in h2o
some little updates around summary and and ip case that failed on jeff's mac
same as h2o1, seems to get same assertion error
Merge branch 'master' of https://github.com/0xdata/h2o-dev
adding testthat engine
adding TestThatToHtml.groovy
adding html converter file sand templates
Merge branch 'master' into cliffc-gbmerr
Compute MSE & proper scoring in GBM