Add isort pre-commit hook

Sort import statement in python files

See https://github.com/PyCQA/isort

python_apps/airtime_analyzer/tests/airtime_analyzer_test.py

@@ -1,5 +1,5 @@
-from nose.tools import *
 import airtime_analyzer
+from nose.tools import *
 
 
 def setup():

python_apps/airtime_analyzer/tests/analyzer_pipeline_test.py

@@ -1,11 +1,12 @@
-from nose.tools import *
+import datetime
+import multiprocessing
 import os
 import shutil
-import multiprocessing
 from queue import Queue
-import datetime
-from airtime_analyzer.analyzer_pipeline import AnalyzerPipeline
+
 from airtime_analyzer import config_file
+from airtime_analyzer.analyzer_pipeline import AnalyzerPipeline
+from nose.tools import *
 
 DEFAULT_AUDIO_FILE = u"tests/test_data/44100Hz-16bit-mono.mp3"
 DEFAULT_IMPORT_DEST = u"Test Artist/Test Album/44100Hz-16bit-mono.mp3"

python_apps/airtime_analyzer/tests/analyzer_test.py

@@ -1,5 +1,5 @@
-from nose.tools import *
 from airtime_analyzer.analyzer import Analyzer
+from nose.tools import *
 
 
 def setup():

python_apps/airtime_analyzer/tests/cuepoint_analyzer_test.py

@@ -1,5 +1,5 @@
-from nose.tools import *
 from airtime_analyzer.cuepoint_analyzer import CuePointAnalyzer
+from nose.tools import *
 
 
 def check_default_metadata(metadata):

python_apps/airtime_analyzer/tests/filemover_analyzer_test.py

@@ -1,11 +1,12 @@
-from nose.tools import *
+import multiprocessing
 import os
 import shutil
-import multiprocessing
 import time
-import mock
 from pprint import pprint
+
+import mock
 from airtime_analyzer.filemover_analyzer import FileMoverAnalyzer
+from nose.tools import *
 
 DEFAULT_AUDIO_FILE = u"tests/test_data/44100Hz-16bit-mono.mp3"
 DEFAULT_IMPORT_DEST = u"Test Artist/Test Album/44100Hz-16bit-mono.mp3"

python_apps/airtime_analyzer/tests/metadata_analyzer_test.py

@@ -1,9 +1,11 @@
 from __future__ import print_function
+
 import datetime
-import mutagen
+
 import mock
-from nose.tools import *
+import mutagen
 from airtime_analyzer.metadata_analyzer import MetadataAnalyzer
+from nose.tools import *
 
 
 def setup():

python_apps/airtime_analyzer/tests/playability_analyzer_test.py

@@ -1,5 +1,5 @@
-from nose.tools import *
 from airtime_analyzer.playability_analyzer import *
+from nose.tools import *
 
 
 def check_default_metadata(metadata):

python_apps/airtime_analyzer/tests/replaygain_analyzer_test.py

@@ -1,6 +1,7 @@
 from __future__ import print_function
-from nose.tools import *
+
 from airtime_analyzer.replaygain_analyzer import ReplayGainAnalyzer
+from nose.tools import *
 
 
 def check_default_metadata(metadata):