title: Acora doesn't work with gzip-opened files
body: <p>I'm trying to run Acora parsing on a file, which works as expected on plain text files.  When I try to run it on gzipped files using the python gzip module (which is supposed to allow transparent reading of compressed files) I receive nothing in return.  This is not a case of not rewinding the file to the beginning, I tried it from fresh with both compressed and uncompressed. </p>
  
  <pre><code>from acora import AcoraBuilder
  
  f1 = open('input_file.txt', 'r')
  ac = AcoraBuilder(tokens).build()
  ac.filefindall(f1)  ## Works as expected
  
  import gzip
  f2 = gzip.open('input_file.txt.gz', 'r')
  ac = AcoraBuilder(tokens).build()
  ac.filefindall(f2)  ## Doesn't work, returns no results
  </code></pre>
  
  <p>Please let me know if this is something I'm missing. </p>