feat: tag 1.2.1 with idfield feature

Author: tcitry

setup.py

@@ -7,7 +7,7 @@
 os.chdir(os.path.normpath(os.path.join(os.path.abspath(__file__), os.pardir)))
 setup(
     name='django-mirage-field',
-    version='1.2.0',
+    version='1.2.1',
     install_requires=[
         "cryptography",
         "tqdm",