Version 1.1.0: fixes for BeagleBone Blue and PocketBeagle

Aaron Marburg (1):

• Added usleep after successfully enabling PWM via udev.

Drew Fustini (16):

• Merge pull request #233 from zsserg/fixed_segfault_in_event_detection
• Merge pull request #257 from zsserg/develop
• Merge pull request #251 from amarburg/master
• Merge pull request #271 from fcooper/documentation-updates
• Update ADC.rst
• Update Encoder.rst
• Update ADC.rst
• Add UART entries for the PocketBeagle (issue #242)
• update install and test shell scripts
• update UART section in README
• Merge pull request #282 from erikwelsh/master
• do not load overlays for the beaglebone blue #283
• Merge pull request #284 from sam-bristow/py3-docs
• Merge pull request #285 from sam-bristow/bugfix/uart-error-reporting
• fix pwm on pocketbeagle and beaglebone blue #286
• remove debug logging

Erik Welsh (1):

• Fixed GPIO export problem; Leaves GPIO in bad state on latest BeagleBone image on PocketBeagle

Franklin S Cooper Jr (3):

• docs/SPI.rst: Fix bus numbering in examples
• docs/GPIO.rst: Add information on blinking led
• docs/GPIO.rst Make documentation a bit newbie friendly

Sam Bristow (3):

• Use print() function in all code and docs
• Use new python-serial API
• Return error-code for failing interface

zserg (5):

• Fixed SEGFAULT when calling remove_event_detect() inside python callback function.
• Fixed SEGFAULT when calling remove_event_detect() inside python callback function.
• Fixed SEGFAULT in event_gpio,c run_callbacks() * Added more elaborate epoll() error logging
• Minor style fixes