Formula Vectors

You can create a vector using the notation:

   expr [ from : to ]

   Where 'expr' will be evaluated for every activity
   between the dates from and to.

   e.g. TSS[today - 90 : today]

   will evaluate to TSS for the last 90 days

   e.g. Activities [ date:date ] > 1

   Will find all days with more than one workout.

.. when using a vector in any arithmetic expression it
   will be evaluated to a sum; this will be fixed shortly
   to enable the use of sum/mean/max/min functions.

.. If needed we can add vector operations but this will
   likely confuse many users (hell, they confuse developers)
   so we will need a good reason to add them !

Lastly, I have also added daterange(from) and daterange(to)
literals to get access to the currently selected daterange
when working in the trends view.

src/SearchBox.cpp

@@ -165,6 +165,8 @@ SearchBox::configChanged(qint32)
     list << "config(units)";
     list << "const(e)";
     list << "const(pi)";
+    list << "daterange(start)";
+    list << "daterange(stop)";
     list << "ctl";
     list << "tsb";
     list << "atl";