added test for reticulation (apparently forgotten)

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/phylobase@930 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
change to accommodate upgrade to roxygen2 4.0.0

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/phylobase@931 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
fixed formatting

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/phylobase@932 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
changing default to fail for reticulated trees as they are not supported enough currently

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/phylobase@933 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
update docs

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/phylobase@934 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
converted checkdata tests to testthat

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/phylobase@935 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
added explicit option for roxygen to avoid warning

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/phylobase@936 edb9625f-4e0d-4859-8d74-9fd3b1da38cb