Merge upstream changes

This will also fix the wrong octal notation for python3

Add support for CM3+

0.2.5

add CM3+ to supported platforms

Attempted fix for GPIO45

0.2.4

fix higher GPIO numbers for PWM1 (41,45,53)

Add support for Embest CM3

0.2.3

add support for Embest produced CM3 modules

add STAGING_DIR to env

0.2.2

add staging dir to environment

arm cross compile flag

experimental..

First release

0.2

set correct settings for EnviBase

First release

v0.1

set correct settings for EnviBase