Bump version to 0.1.4.6

Signed-off-by: Yujia Zheng <yjzheng19@gmail.com>

Author: kunwuz

setup.py

@@ -3,7 +3,7 @@
 with open('README.md', 'r') as fh:
     README = fh.read()
 
-VERSION = '0.1.4.5'
+VERSION = '0.1.4.6'
 
 setuptools.setup(
     name='causal-learn',