forked from Wavyzz/dolibarr
* Fix: Enforce/use int nature of BookKeeping(Line)::$piece_num * Fix typing in hookmanager class * Improve DolHooksCollector phpdoc * Fix PhanTypePossiblyInvalidDimOffset by testing index's existence * Ignore PhanTypePossiblyInvalidDimOffset that phan can not detect * Allow to be null, initialise instead of unset