fix: setup.py must have setuptools.find_packages()

Author: chilango74

README.md

@@ -4,7 +4,7 @@
         <img src="https://img.shields.io/badge/python-v3-brightgreen.svg"
             alt="python"></a> &nbsp;
     <a href="https://pypi.org/project/okama/">
-        <img src="https://img.shields.io/badge/pypi-v0.96-brightgreen.svg"
+        <img src="https://img.shields.io/badge/pypi-v0.97-brightgreen.svg"
             alt="pypi"></a> &nbsp;
     <a href="https://opensource.org/licenses/MIT">
         <img src="https://img.shields.io/badge/license-MIT-brightgreen.svg"

okama/__init__.py

@@ -33,4 +33,4 @@
 from okama.helpers import Float, Frame, Rebalance, Date
 import okama.settings
 
-__version__ = '0.96'
+__version__ = '0.97'

setup.py

@@ -1,4 +1,4 @@
-from setuptools import setup
+from setuptools import setup, find_packages
 from pathlib import Path
 
 # read description from README.md and version from okama/__init__.py
@@ -23,7 +23,7 @@
     url='https://okama.io/',
     download_url='https://github.com/mbk-dev/okama/archive/v0.81.tar.gz',
     keywords=['finance', 'investments', 'efficient frontier', 'python', 'optimization'],
-    packages=['okama', 'tests'],
+    packages=find_packages(),
     package_data={'tests': ['*.csv']},
     install_requires=['pandas>=0.25.0',
                       'numpy<=1.19.3',