refactor!: rename rfc files to private filenames

Author: lepture

src/otpauth/__init__.py

@@ -1,10 +1,10 @@
 from .core import SupportedAlgorithms
-from .rfc4226 import HOTP, generate_hotp
-from .rfc6238 import TOTP, generate_totp
+from ._rfc4226 import HOTP, generate_hotp
+from ._rfc6238 import TOTP, generate_totp
 
 
 __author__ = "Hsiaoming Yang <[email protected]>"
-__homepage__ = "https://github.com/lepture/otpauth"
+__homepage__ = "https://otp.authlib.org/"
 __version__ = "2.1.1"
 
 __all__ = [

src/otpauth/rfc4226.py src/otpauth/_rfc4226.pysrc/otpauth/rfc4226.py renamed to src/otpauth/_rfc4226.py

@@ -2,7 +2,7 @@
 import time
 import hmac
 from .core import OTP, SupportedAlgorithms
-from .rfc4226 import generate_hotp
+from ._rfc4226 import generate_hotp
 
 
 class TOTP(OTP):