v0.12.0

Commit	Message/Description
89ea5ef	v0.12.0
8bb887b	ci: remove "npm cache clean" from appveyor
b35fc65	Deps: drop es6-shim
a9b5cca	Deps: serialport ~6.0.x
1f7ad6c	Deps: serialport 6
0f3c84a	Readme: fix gitter link
608fe55	Tests: Explicit strict mode
641e9fb	Accelerometer: update tests and digital.all/integral/fractional
6b7eedd	Require pins
3976817	Accelerometer: set fractional value
0ad2a59	Accelerometer: remove toFixed call from x,y,z getters
aa0f2bf	Fix datasheet unsecure link in comment
0d666f1	Add doc expander ADS1115
e5e3cdd	Add example expander ADS1115
a1920fa	Add component expander ADS1115
4504b41	move Board options up
3fe0961	fix: Switch defaults to NO
9732d51	test/animation.js: fix indent
73f6a7c	Fix sycnchronous animation queues
fd59d4a	Accelerometer: modify MPU6050 toGravity to return values with 3 decimals
31cdd0d	IMU: Fn.{s32, u32} => s32, u32
2b04a0b	Stepper: pin correction
f975113	Regenerate examples
c725672	Stepper: fix incorrect pins in code and diagram