use versioneer for git tag based versioning

Author: marscher

.gitattributes

@@ -0,0 +1 @@
+sktime/_version.py export-subst

MANIFEST.in

@@ -0,0 +1,2 @@
+include versioneer.py
+include sktime/_version.py

setup.cfg

@@ -0,0 +1,13 @@
+
+# See the docstring in versioneer.py for instructions. Note that you must
+# re-run 'versioneer.py setup' after changing this section, and commit the
+# resulting files.
+
+[versioneer]
+VCS = git
+style = pep440
+versionfile_source = sktime/_version.py
+versionfile_build = sktime/_version.py
+tag_prefix = v
+#parentdir_prefix =
+

setup.py

@@ -3,6 +3,8 @@
 from setuptools import setup, Extension, find_packages
 from setuptools.command.build_ext import build_ext
 
+import versioneer
+
 CCODE_TEMPLATE = """{includes}
 int main(void) {{
     {code}
@@ -68,11 +70,13 @@ def build_extension(self, ext):
 
         super(Build, self).build_extension(ext)
 
+cmdclass = versioneer.get_cmdclass()
+cmdclass['build_ext'] = Build
 
 metadata = \
     dict(
         name='scikit-time',
-        version='0',
+        version=versioneer.get_version(),
         author='cmb',
         author_email='nope',
         description='scikit-time project',
@@ -93,7 +97,7 @@ def build_extension(self, ext):
             ], include_dirs=['sktime/markovprocess/include'],
                       language='c++', extra_compile_args=['-std=c++17']),
         ],
-        cmdclass=dict(build_ext=Build),
+        cmdclass=cmdclass,
         zip_safe=False,
         install_requires=['numpy'],
         packages=find_packages(),

sktime/__init__.py

@@ -1 +1,5 @@
 from . import markovprocess
+
+from ._version import get_versions
+__version__ = get_versions()['version']
+del get_versions