Added note about DTD updates
Use fully qualified import paths
Fixed instantiate by reference
Clarify unused but supplied constructor parameter
*8436* Update documentation for CLI upgrade to include Installed=Off
*8254* Introduced metrics structure
*8254* Backport usage events plugin
*8254* Backport usage stats plugin
*8254* Get rid of OJS default stats (views columns)
*8254* Implemented stats migration
*8254* Add missing statistic setting
*8254* Transformed Timed View into a report plugin, adapted to work with ojs counter metric type
*8254* Transformed Counter into a report plugin, adapted to work with ojs counter metric type
*8254* Adapted view report plugin to use metrics structure
*8254* Introduced script to remove timed view bot stats when upgrading
*8254* Introduced method to generate statistics reports
*8254* Implement usage stats report
*8253* Introduced SciELO plugin
statistics handler fixes
Introduced statistics helper