commit characterization and summaryStats
descriptive stats for authors, commits, layers
getNumAuthors
add Motif and MotifOccurrence
compute things for motifs
new version with weird workaround for featureList
better handling of column headers and filenames for printouts
printout footprints as well
printout metagraph's diameter as well
fix : simple graph is always needed to compute twins + fix concurrent mod
fix broken function getMotifStats
printout the number of occurrences per motif
fix printout headers
optimize memory footprint
avoid using duplicate array
simplified creation of metagraph from a dag
printout numCommits too
fix latex table creation
cleaner code for computing motifs
small fixes