- fixed undesired copy of data.table objects #101
- fixed CRAN problems with tests
- revert back to new version of data.table
- reimplemented in base R removing several dependencies
- fixed #1, #81, #82, #83, #84, #87, #88, #98
- added preprocessing functions
add_session(),extract_host(),extract_domain(),extract_path(),add_next_visit(),add_previous_visit(),add_title(),add_referral() - changed example data to something more realistic
- added unit tests (#65)
- added filtering, summarizing, and aggregating functions
- non documented functions