pin pysmiles version to 1.1.2

- #75 (comment)

Author: aditya0by0

setup.py

@@ -34,7 +34,7 @@
         "urllib3",
         "transformers",
         "fastobo",
-        "pysmiles",
+        "pysmiles==1.1.2",
         "scikit-network",
         "svgutils",
         "matplotlib",