Examples not running - "NoneType" error for binary object

[raistlinJ]

Describe the bug
I installed zelos using pip on multiple platforms: Windows 10, Kali Linux 2022.1, Ubuntu 16, using python versions 3.5-3.9 and in all cases, the examples error out when executed.

To Reproduce
Steps to reproduce the behavior:

1. Install zelos using pip (e.g., python 3.8)
2. cd into examples/hello directory
3. Either run the python test program or zelos directly on the binary
4. Notice the following errors:
   "parse_____:NOTICE:Requested interpreter is blank
   Unknown format"
   "AttributeError: 'NoneType' object has no attribute 'static_symbols'
   (a similar "NoneType" object error occurs when trying to run zelos with the other examples)"

Expected behavior
Examples should execute as described in README

[raistlinJ]

After looking further into the issue, I found that the problem lies with using the latest version of lief (0.12). I solved this problem by reverting to lief version 0.11.5.

Recommend locking the version of lief to 0.11.5 until fixed.