title: ngx-pipes filter by multiple conditions
body: <p>I'm using ngx-pipes plugin(<a href="https://github.com/danrevah/ngx-pipes#filterby" rel="nofollow noreferrer">https://github.com/danrevah/ngx-pipes#filterby</a>) in my ANgular project. And I don't find a way to filter by multiple properties.</p>
  
  <p>My data looks like this</p>
  
  <pre><code>[{'name': 'tom', 'age':12, location:'denver'},
  {'name': 'jerry', 'age':11, location:'denver'},
  {'name': 'scott', 'age':12, location:'denver'}, 
  {'name': 'tiger', 'age':13, location:'colarado'},
  {'name': 'lion', 'age':11, location:'denver'}]
  </code></pre>
  
  <p>Now, I want to use filterBy pipe to filter the data whose age is 11, and whose location is 'Denver'.</p>
  
  <p>Please help me with this.</p>