Minimum Python 3 version is 3.4, requires mbed-os-tools 0.0.9

Author: madchutney

setup.py

@@ -32,15 +32,20 @@
             'mbed-cli=mbed.mbed:main',
         ]
     },
-    python_requires='>=2.7.10,!=3.0.*,!=3.1.*,<4',
+    python_requires='>=2.7.10, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.0, !=3.4.1, !=3.4.2, <4',
     classifiers=(
-        "Programming Language :: Python :: 2",
-        "Programming Language :: Python :: 3",
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
         "License :: OSI Approved :: Apache Software License",
         "Operating System :: OS Independent",
     ),
     install_requires=[
         "pyserial>=3.0,<4.0",
-        "mbed-os-tools<0.1.0",
+        "mbed-os-tools>=0.0.9,<0.1.0",
     ]
 )