Add roxygen for LogAndEcho
Reduce number of lines printed.
Update date, change URL, add testthat.
Added LOG_FILE_NAME.
Add beginnings of refactored H2O connection object.
Remove h2o.logIt.
Rewrite of logging layer to meet needs of new H2O Connection object.
Merge branch 'master' of github.com:h2oai/h2o-dev
Add testthat package files.
Changes to R logging.