Python 3.8 setup.py fixes and package build

* TODO: Fix asyncio tests

Signed-off-by: Aleksei Stepanov <penguinolog@gmail.com>

setup.py

@@ -192,7 +192,7 @@ def get_simple_vars_from_src(
     if sys.version_info[:2] < (3, 8):
         ast_data = (ast.Str, ast.Num, ast.List, ast.Set, ast.Dict, ast.Tuple, ast.Bytes, ast.NameConstant, ast.Ellipsis)
     else:
-        ast_data = ast.Constant
+        ast_data = (ast.Constant, ast.List, ast.Set, ast.Dict, ast.Tuple)
 
     tree = ast.parse(src)
 

tools/build-wheels.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 set -e
-PYTHON_VERSIONS="cp36-cp36m cp37-cp37m"
+PYTHON_VERSIONS="cp36-cp36m cp37-cp37m cp38-cp38"
 
 # Avoid creation of __pycache__/*.py[c|o]
 export PYTHONDONTWRITEBYTECODE=1