Fix swig build (missing arg broke ISR callbacks), clean up unneeded makefile, bump version for release.

Makefile

@@ -1,12 +0,0 @@
-all: bindings
-	python setup.py build
-
-bindings:
-	swig3.0 -python -threads wiringpi.i
-
-clean:
-	rm -rf build/
-	rm -rf dist/
-
-install:
-	sudo python setup.py install

setup.py

@@ -54,12 +54,13 @@ _wiringpi = Extension(
     '_wiringpi',
     include_dirs=['WiringPi/wiringPi','WiringPi/devLib'],
     sources=sources,
+    swig_opts=['-threads'],
     extra_link_args=['-lcrypt', '-lrt']
 )
 
 setup(
     name = 'wiringpi',
-    version = '2.44.4',
+    version = '2.44.5',
     ext_modules = [ _wiringpi ],
     py_modules = ["wiringpi"],
     install_requires=[],