adding python src and renamin _ext

Makefile

@@ -7,7 +7,7 @@ debug: ## Build extension with debug prints and assertions
 	python setup.py build_ext --inplace -UNDEBUG -DCR_VERBOSE
 
 clean: ## Remove the build folder and the shared library
-	rm -rf build/ creader.cpython*
+	rm -rf build/ _creader.cpython*
 
 test: ## Run unit tests using pytest
 	python -m pytest 

creader/__init__.py

@@ -0,0 +1 @@
+from _creader import *

setup.py

@@ -3,7 +3,7 @@
 import setuptools
 import numpy as np
 
-c_ext = setuptools.Extension("creader",
+c_ext = setuptools.Extension("_creader",
                     sources = [
                         "src/creader_module.c", 
                         "src/cluster_reader.c", 

src/creader_module.c

@@ -70,7 +70,7 @@ static PyMethodDef creader_methods[] = {
 // Module defenition
 static struct PyModuleDef creader_def = {
     PyModuleDef_HEAD_INIT,
-    "creader",
+    "_creader",
     module_docstring,
     -1,
     creader_methods, // m_methods
@@ -81,7 +81,7 @@ static struct PyModuleDef creader_def = {
 };
 
 // Initialize module and add classes
-PyMODINIT_FUNC PyInit_creader(void) {
+PyMODINIT_FUNC PyInit__creader(void) {
 
     PyObject *m = PyModule_Create(&creader_def);
     if (m == NULL)