FEAT: add dynamic version (#160)

* FEAT: add coincurve dynamic version

* (ref) cleanup that helps with local tox -e fmt

.coveragerc

@@ -6,6 +6,7 @@ source =
     tests
 
 omit =
+    */_version.py
     */_windows_libsecp256k1.py
     */test_bench.py
 

setup.py

@@ -29,6 +29,11 @@
 
 LIB_TARBALL_URL = f'https://github.com/bitcoin-core/secp256k1/archive/{UPSTREAM_REF}.tar.gz'
 
+globals_ = {}
+with open(join(COINCURVE_ROOT_DIR, 'src', 'coincurve', '_version.py')) as fp:
+    exec(fp.read(), globals_)  # noqa S102
+    __version__ = globals_['__version__']
+
 # We require setuptools >= 3.3
 if [int(i) for i in setuptools_version.split('.', 2)[:2]] < [3, 3]:
     raise SystemExit(
@@ -115,7 +120,7 @@ def has_c_libraries(self):
 
     setup(
         name='coincurve',
-        version='19.0.1',
+        version=__version__,
 
         description='Cross-platform Python CFFI bindings for libsecp256k1',
         long_description=open('README.md', 'r').read(),

src/coincurve/_version.py

@@ -0,0 +1,11 @@
+# This file is imported from __init__.py and exec'd from setup.py
+
+MAJOR = 19
+MINOR = 0
+MICRO = 1
+RELEASE = True
+
+__version__ = '%d.%d.%d' % (MAJOR, MINOR, MICRO)
+
+if not RELEASE:
+    __version__ += '.dev0'