title: Tabula-py is not splitting columns right
body: <p>I've just discovered the joy of tabula-py (and tabula-java of course) to extract tables from pdf. I am now programming a script for my job that reads some data from the pdf table, cleans it a little bit and the export that into excel. The pdf I am using has the same format every day, and the table is always in a certain area. To detect the area, I am using tabula.exe: I select the table, visualize the preview (which looks good), and then export the script, in order to see the -a parameter that is used by tabula.exe. I then use this in my command in Python, that is:</p>
  
  <pre><code>df = tabula.read_pdf(os.fsdecode(directory)+filename, encoding = 'ISO-8859-1',
  stream=True, area = "81.106,302.475,384.697,552.491", pages = 2, pandas_options={'header':None})
  </code></pre>
  
  <p>I am using the encoding parameter because the standard utf-8 returns an error, and the stream method, because it's the one that shows a nice extracted table in tabula.exe. However, the dataframe has a problem, because the first 2 columns (which are displayed correctly as 2 different columns in the preview of tabula.exe) are actually one single column, so that names and values get mixed together. </p>
  
  <p>Do you have any idea of why the same area yields 2 different results in tabula-py and tabula.exe? Thank you very much!</p>