api: rename _common to builtins

Because this module describes devices that can be built into a hub or other device.

Since this design is now explicitly shown in
the docs as well, we don't need to hide this
module in the package.

Pipfile

@@ -6,7 +6,7 @@ verify_ssl = true
 [dev-packages]
 sphinx = "*"
 flake8 = "*"
-sphinx-rtd-theme = "~=0.4.0"
+sphinx-rtd-theme = "==0.4.2"
 doc8 = "*"
 
 [packages]

pybricks/_instances.py

@@ -1,6 +1,6 @@
 """Sphinx workaround to document instance attributes such as self.light"""
 
-from ._common import Speaker, Display, Battery, ColorLight, KeyPad, LightArray
+from .builtins import Speaker, Display, Battery, ColorLight, KeyPad, LightArray
 
 from types import ModuleType
 

pybricks/cityhub.py

@@ -1,6 +1,6 @@
 """LEGO® Power Functions 2.0 City Hub."""
 
-from ._common import Battery, ColorLight
+from .builtins import Battery, ColorLight
 
 battery = Battery()
 light = ColorLight()

pybricks/ev3brick.py

@@ -1,6 +1,6 @@
 """LEGO® MINDSTORMS® EV3 Brick."""
 
-from ._common import Speaker, Display, Battery, ColorLight, KeyPad
+from .builtins import Speaker, Display, Battery, ColorLight, KeyPad
 
 sound = Speaker()
 display = Display()

pybricks/ev3devices.py

@@ -1,7 +1,7 @@
 """LEGO® MINDSTORMS® EV3 motors and sensors."""
 
 from .parameters import Direction
-from ._common import Motor as CommonMotor
+from .builtins import Motor as CommonMotor
 
 
 class Motor(CommonMotor):

pybricks/hubs.py

@@ -1,6 +1,6 @@
 """LEGO® Programmable Hubs."""
 from enum import Enum
-from ._common import Speaker, Display, Battery, ColorLight, KeyPad
+from .builtins import Speaker, Display, Battery, ColorLight, KeyPad
 
 class EV3Brick():
     """LEGO® MINDSTORMS® EV3 Brick.

pybricks/lpf2devices.py

@@ -1,8 +1,8 @@
 """LEGO® Power Functions 2.0 motor, sensors, and lights."""
 
-from ._common import Motor as CommonMotor, ColorLight
+from .builtins import Motor as CommonMotor, ColorLight
 
-from ._common import KeyPad, Accelerometer
+from .builtins import KeyPad, Accelerometer
 # The above abviously needs fixing (but not until after fixing merge conflict)
 
 

pybricks/movehub.py

@@ -1,6 +1,6 @@
 """LEGO® Power Functions 2.0 Move Hub."""
 
-from ._common import Battery, ColorLight
+from .builtins import Battery, ColorLight
 
 battery = Battery()
 light = ColorLight()