add tag version

Author: qwj

pproxy/__doc__.py

@@ -1,10 +1,19 @@
 __title__       = "pproxy"
-__version__     = "2.4.7"
 __license__     = "MIT"
 __description__ = "Proxy server that can tunnel among remote servers by regex rules."
 __keywords__    = "proxy socks http shadowsocks shadowsocksr ssr redirect pf tunnel cipher ssl udp"
 __author__      = "Qian Wenjie"
 __email__       = "[email protected]"
 __url__         = "https://github.com/qwj/python-proxy"
 
+try:
+    from setuptools_scm import get_version
+    __version__ = get_version()+'dev'
+except Exception:
+    try:
+        from importlib.metadata import version
+        __version__ = version("package-name")
+    except Exception:
+        __version__ = 'unknown'
+
 __all__ = ['__version__', '__description__', '__url__']

setup.py

@@ -14,7 +14,7 @@ def find_value(name):
 
 setup(
     name                = find_value('title'),
-    version             = find_value('version'),
+    use_scm_version     = True,
     description         = find_value('description'),
     long_description    = read('README.rst'),
     url                 = find_value('url'),