added ifdef to prevent compilation issue

but it's really not clear yet how this works

Atm_AccelStepper.h

@@ -1,5 +1,5 @@
 #pragma once
-
+//#ifdef AccelStepper_h
 #include <Automaton.h>
 #include <AccelStepper.h>
 
@@ -122,6 +122,8 @@ class Atm_AccelStepper: public Machine {
 
 };
 
+//#endif
+
 /*
 Automaton::ATML::begin - Automaton Markup Language
 

Atm_Teenstep.cpp

@@ -1,5 +1,5 @@
 #if defined(__MK20DX128__) || defined(__MK20DX256__) || defined(__MK64FX512__) || defined(__MK66FX1M0__)
-
+#ifdef TEENSYSTEP_H
 #include "Atm_Teenstep.h"
 
 /* Add optional parameters for the state machine to begin()
@@ -414,3 +414,4 @@ Atm_Teenstep& Atm_Teenstep::onLimitlow( atm_cb_push_t callback, int idx ) {
  }
 
 #endif
+#endif

Atm_Teenstep.h

@@ -1,7 +1,7 @@
 #pragma once
 
 #if defined(__MK20DX128__) || defined(__MK20DX256__) || defined(__MK64FX512__) || defined(__MK66FX1M0__)
-
+#ifdef TEENSYSTEP_H
 #include <Automaton.h>
 #include <TeensyStep.h>
 
@@ -89,6 +89,7 @@ class Atm_Teenstep: public Machine {
 };
 
 #endif
+#endif
 
 /*
 Automaton::ATML::begin - Automaton Markup Language