Test included and refactoring included. This fixes #80
Before
>>> zstd.compress(b"")
b"\xe4As\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'str' object cannot be interpreted as an integer"
>>> zstd.compress(b"")
b"\xe4\x80s\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'ModuleSpec' object has no attribute '_initializ"
Test included and refactoring included. This fixes #80
Before
After