Updating docs
Bumping version numbers for v2.4.2
Merge branch '2.4'
Requiring needed package for transformations
Trying to set the width of R's output to match the terminal width
Suppressing warnings when testing whether a double-mode image can be represented as integer
Using emptyMatrix(); new graph methods for setting attributes
Graph indexing, coercion to matrix, better coercion to igraph (retaining attributes)