update metadata and changelog

Author: dmey

CHANGELOG.txt

@@ -1,6 +1,7 @@
 0.2.0
 - Add support for handling discrete quantities (#9).
 - Add support for setting a seed when generating new samples (#11).
+- Drop support for Python 3.7.
 
 0.1.1
 - Fix qrng argument for pyvinecopulib due to vinecopulib/pyvinecopulib#68 and vinecopulib/pyvinecopulib#69.

setup.py

@@ -16,8 +16,8 @@
     license="MIT",
     author='D. Meyer, T. Nagler',
     classifiers=[
-        "Development Status :: 3 - Alpha",
-        "Intended Audience :: Developers",
+        "Development Status :: 4 - Beta",
+        "Intended Audience :: Science/Research",
         "Programming Language :: Python :: 3",
     ],
     packages=find_packages(),