added info about version of the program (#120)

MANIFEST.in

@@ -0,0 +1,4 @@
+include LICENSE
+recursive-include m2cgen VERSION.txt
+recursive-include m2cgen linear_algebra.*
+global-exclude *.py[cod]

m2cgen/VERSION.txt

@@ -0,0 +1 @@
+0.4.1

m2cgen/__init__.py

@@ -1,3 +1,5 @@
+import os
+
 from .exporters import (
     export_to_c,
     export_to_go,
@@ -13,3 +15,7 @@
     export_to_go,
     export_to_javascript,
 ]
+
+with open(os.path.join(os.path.dirname(os.path.realpath(__file__)),
+                       "VERSION.txt")) as version_file:
+    __version__ = version_file.read().strip()

m2cgen/cli.py

@@ -60,6 +60,9 @@
     help="Sets the maximum depth of the Python interpreter stack. "
          "No limit by default",
     default=MAX_RECURSION_DEPTH)
+parser.add_argument(
+    "--version", "-v", action="version",
+    version='%(prog)s {}'.format(m2cgen.__version__))
 
 
 def parse_args(args):

setup.cfg

@@ -1,6 +1,7 @@
 [metadata]
 description-file = README.md
 license-file = LICENSE
+version = m2cgen/VERSION.txt
 
 [flake8]
-exclude = .git,generated_code_examples/
+exclude = .git,generated_code_examples/

setup.py

@@ -3,19 +3,19 @@
 with open("README.md", encoding="utf-8") as f:
     long_description = f.read()
 
+with open("m2cgen/VERSION.txt") as f:
+    version = f.read().strip()
+
 setup(
     name="m2cgen",
-    version="0.4.1",
+    version=version,
     url="https://github.com/BayesWitnesses/m2cgen",
     description="Code-generation for various ML models into native code.",
     long_description=long_description,
     long_description_content_type="text/markdown",
     license="MIT",
-    packages=find_packages(exclude=["tests.*", "tests"]),
-    package_data={
-        "": ["linear_algebra.java", "linear_algebra.c", "linear_algebra.go",
-             "linear_algebra.js"],
-    },
+    packages=find_packages(exclude=["tests.*", "tests", "tools"]),
+    include_package_data=True,
     classifiers=[
         "Development Status :: 3 - Alpha",
         "Intended Audience :: Developers",