Remove restrictive __all__ that broke wildcard imports

Author: milanofthe

src/pathsim_chem/__init__.py

@@ -10,8 +10,6 @@
 except ImportError:
     __version__ = "unknown"
 
-__all__ = ["__version__"]
-
 #for direct block import from main package
 from .tritium import *
 from .thermodynamics import *