Fixes #71 by checking the selector for actual changes (#383)

* Fixes #71 by checking the selector for actual changes
Before the selector was always being set which had the effect of 'resetting' the pagination back to zero if the selector was reactively set

* Make sure selector actually exists before trying to compare it
Was causing an issue when it was undefined (i.e.: you switched routes)

client/main.js

@@ -184,8 +184,9 @@ Template.tabular.onRendered(function () {
     var data = Template.currentData();
 
     //console.log('currentData autorun', data);
-
-    if (!data) return;
+
+    // if we don't have data OR the selector didn't actually change return out
+    if (!data || (data.selector && template.tabular.selector === data.selector)) return;
 
     // We get the current TabularTable instance, and cache it on the
     // template instance for access elsewhere