update version to b2

Author: jurgen-lentz

amplpy/__init__.py

@@ -55,7 +55,7 @@
 except Exception:
     pass
 
-__version__ = "0.15.0b1"
+__version__ = "0.15.0b2"
 
 
 def _list_aliases():

setup.py

@@ -166,7 +166,7 @@ def link_args():
 
 setup(
     name="amplpy",
-    version="0.15.0b1",
+    version="0.15.0b2",
     description="Python API for AMPL",
     long_description=__doc__,
     long_description_content_type="text/markdown",