anchor.diff:     * list is created.
      */
     LogEntryList after(DateTime when, [bool inPlace = false]) =>
  -      _tail((e) => e.time > when, inPlace, 'after $when', logs.length);
  +      _tail((e) => e.time.isAfter(when), inPlace, 'after $when', logs.length);
   
     /**
      * Returns log events that happened from [when] onwards. If
  
positive.code:    * list is created.
     */
    LogEntryList before(DateTime when, [bool inPlace = false]) =>
        _head((e) => e.time >= when, inPlace, 'before $when', logs.length);
  
    /**
     * Returns log events that happened after [logEntry]'s time.
  
negative.code:    * a new list is created.
     */
    LogEntryList from(DateTime when, [bool inPlace = false]) =>
        _tail((e) => !e.time.isBefore(when), inPlace, 'from $when', logs.length);
  
    /**
     * Returns log events that happened until [when]. If [inPlace]
  