add version file

Author: John Lyu

dataframe_image/__init__.py

@@ -1,2 +1,3 @@
 from ._convert import convert
 from ._pandas_accessor import export
+from ._version import __version__

dataframe_image/_version.py

@@ -0,0 +1 @@
+__version__ = "0.1.18"

setup.py

@@ -50,7 +50,8 @@
     use_scm_version={
         'write_to': 'dataframe_image/_version.py',
         'write_to_template': '__version__ = "{version}"',
-        'tag_regex': r'^(?P<prefix>v)?(?P<version>[^\+]+)(?P<suffix>.*)?$',
+        'local_scheme': 'node-and-date'
+        # 'tag_regex': r'^(?P<prefix>v)?(?P<version>[^\+]+)(?P<suffix>.*)?$',
     },
     setup_requires=["setuptools_scm"],
 )