In the PDFStream it's possible that the /Type element is not
present, but /type is. According to the spec, these are different
elements, but in the case in point they had the same meaning.
If PDFMiner is not running in STRICT mode and /Type doesn't resolve,
a fallback to /type is used to determine the tree type.
* Removing all the "#!/usr/bin/env python" lines, they do not need for python3, solving issue number: #19.
* Restored all the shebangs in the tools and tests folders (because they are real executables) but used "#!/usr/bin/env python" instead of "#!/usr/bin/python" as this blog points out: https://www.peterbe.com/plog/importance-of-env
Removed also the shebang from pdfminer/psparser.py file.