new defaults for v5

[grain209]

Config options defined in the previous version should still work.

AutoTracking / AutoCollector :

New default values:

   recordPageViewsOnExit : true // in v4 it was False

Changes in the behaviour:

   recordClicks: true // it means that we should record ALL clicks, not only on Links,

Cleaner syntax of the config, with additional options:

   clicks: {
     record: true,
     selectors: ['a', 'button', '.some-class-123', '#element1'], // record clicks only on these elements
     once: false, // remove event listener after an event happened
     position: {
       pointer: true, // record exact x,y position of the cursor/touch
       element: true // record element's x,y position
     }
   }

  views: {
    page: {
       record: true,
       // ...
    },
    element: {
      record: true,
      selectors: ['.track-element-view'],
      once: false
   }
  }