Merge pull request #120 from richievos/master

Use safer & faster min/max functions

Merge branch 'develop'

Merge branch 'release/1.3.0'

version 1.1.4

doc and bug fixes, expose all stepper parameters

1.1.2 nonblocking mode improvements

add DRV8880 support

Added acceleration modes #1, dual motor #2, other updates

Fix for DRV8825, ESP8266, add ~ENABLE control