Init PWM-able AUTO_FAN pins with SET_OUTPUT

Further refinements of TWIBus

Add working PlatformIO support

Fixup 3DRAG pins based on updated RAMPS pins

Fix acceleration and feedrate following bq/Marlin

Fix stopSDPrint so it works when paused

If the SD print is paused, it cannot be stopped

Added hyphenated strings for full graphic display

Add an i2c request handler

Strip never-translated strings from language files

Use configured feedrates, center in DELTA_CALIBRATION_MENU

Minor cleanup of SdFatUtil.h, MarlinSerial.cpp

Add support for i2c slave address

Fix serial output for MBL, M303

Update language_de.h with MSG_MOVE_E1 - E4

MSG_MOVE_E1 was missing
MSG_MOVE_E2 was missing
MSG_MOVE_E3 was missing
MSG_MOVE_E4 was missing

I assigned "0" to "MSG_MOVE_E1", "1" to "MSG_MOVE_E2" and so on, as this is what i assume to be the standard naming for the first (E0) and second (E1) extruder. This would have to be changed inthe other languages too :(

Include days in Graphical LCD print timer

Throw MINTEMP BED error only if heating