Make search execution easier to track
Make search execution easier to track

Searcher construction previously would immediately execute search logic
if the forms were found to be valid.  Instead, asking the Searcher's
"ready" property after construction is a simple alias for asking if the
two forms are valid.  If so, it is safe to execute the search machinery.

pivotal-energy-solutions/django-appsearch,pivotal-energy-solutions/django-appsearch,pivotal-energy-solutions/django-appsearch,pivotal-energy-solutions/django-appsearch