restructure to use pyximport and build cython extension locally to avoid platform compatibility issues (successful test, linuxMint 19.2)

Author: mgdotdev

setup.py

@@ -8,7 +8,7 @@
 
 setup(
     name='libRL',
-    version='1.0.1',
+    version='1.0.3',
     description='Library of functions used for characterizing Microwave Absorption',
     long_description=long_description,
     url='https://github.com/1mikegrn/libRL',