Blacken all Python files

Using the black code reformatter, pass it over all our Python files.
This allows for a consistent style across the code base.

Exception: lumps/dmxgus/stats.py, for readability.

lumps/genmidi/midi.py

@@ -10,46 +10,58 @@
 #    D in Octave 0:       O0.D
 #    E in Octave 2:       O2.E
 
-class Octave:
-	def __init__(self, base):
-		self.C  = base
-		self.Cs = base + 1
-		self.Db = base + 1
-		self.D  = base + 2
-		self.Ds = base + 3
-		self.Eb = base + 3
-		self.E  = base + 4
-		self.F  = base + 5
-		self.Fs = base + 6
-		self.Gb = base + 6
-		self.G  = base + 7
-		self.Gs = base + 8
-		self.Ab = base + 8
-		self.A  = base + 9
-		self.As = base + 10
-		self.Bb = base + 10
-		self.B  = base + 11
 
-On5 = Octave(0)      # Octave -5
-On4 = Octave(12)     # Octave -4
-On3 = Octave(24)     # Octave -3
-On2 = Octave(36)     # Octave -2
-On1 = Octave(48)     # Octave -1
-O0  = Octave(60)     # Octave 0
-O1  = Octave(72)     # Octave 1
-O2  = Octave(84)     # Octave 2
-O3  = Octave(96)     # Octave 3
-O4  = Octave(108)    # Octave 4
-O5  = Octave(120)    # Octave 5
+class Octave:
+    def __init__(self, base):
+        self.C = base
+        self.Cs = base + 1
+        self.Db = base + 1
+        self.D = base + 2
+        self.Ds = base + 3
+        self.Eb = base + 3
+        self.E = base + 4
+        self.F = base + 5
+        self.Fs = base + 6
+        self.Gb = base + 6
+        self.G = base + 7
+        self.Gs = base + 8
+        self.Ab = base + 8
+        self.A = base + 9
+        self.As = base + 10
+        self.Bb = base + 10
+        self.B = base + 11
+
+
+On5 = Octave(0)  # Octave -5
+On4 = Octave(12)  # Octave -4
+On3 = Octave(24)  # Octave -3
+On2 = Octave(36)  # Octave -2
+On1 = Octave(48)  # Octave -1
+O0 = Octave(60)  # Octave 0
+O1 = Octave(72)  # Octave 1
+O2 = Octave(84)  # Octave 2
+O3 = Octave(96)  # Octave 3
+O4 = Octave(108)  # Octave 4
+O5 = Octave(120)  # Octave 5
 
 # Given a MIDI note number, return a note definition in terms of the
 # constants above.
 
+
 def def_for_note(note):
-	OCTAVES = [ "On5", "On4", "On3", "On2", "On1",
-	            "O0", "O1", "O2", "O3", "O4", "O5" ]
-	NOTES = [ "C", "Cs", "D", "Ds", "E", "F", "Fs",
-	          "G", "Gs", "A", "As", "B" ]
-
-	return "%s.%s" % (OCTAVES[note // 12], NOTES[note % 12])
+    OCTAVES = [
+        "On5",
+        "On4",
+        "On3",
+        "On2",
+        "On1",
+        "O0",
+        "O1",
+        "O2",
+        "O3",
+        "O4",
+        "O5",
+    ]
+    NOTES = ["C", "Cs", "D", "Ds", "E", "F", "Fs", "G", "Gs", "A", "As", "B"]
 
+    return "%s.%s" % (OCTAVES[note // 12], NOTES[note % 12])