Exclude tests directory from framework publish

Add 100+ automated unit tests from .expect file specifications
Add session system test
Add rsx:constants:regenerate command test
Add rsx:logrotate command test
Add rsx:clean command test
Add rsx:manifest:stats command test
Add model enum system test
Add model mass assignment prevention test
Add rsx:check command test
Add migrate:status command test

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app/RSpade/Core/Time/Rsx_Date.php

@@ -85,6 +85,9 @@ class Rsx_Date
         return null;
     }
 
+    // .expect file will document expected behaviors
+    // See Rsx_Date.php.expect for behavioral specifications
+
     /**
      * Check if input is a valid date-only value (not datetime)
      *